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Science [1 Marks Each] M.C.Q.

Light, Shadows and Reflections · MP Board (MPBSE) STD 6 (Madhya Pradesh - English Medium). 148 questions.

Questions · Page 3 of 3

[1 Marks Each] M.C.Q.

MCQ 1011 Mark
Which of the following is are the example(s) of a light reflector? $1.$ Fluorescent tube $2.$ A mirror $3.$ The moon
  • A
    $(1)$ only
  • B
    $(3)$ only
  • C
    $(1)$ and $(2)$ only
  • ✓
    $(2)$ and $(3)$ only
Answer
Correct option: D.
$(2)$ and $(3)$ only

 Fluorescent tube is an artificial light source.

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MCQ 1021 Mark
Paheli observed the shadow of a tree at $8:00\ a.m., 12:00$ noon and $3:00\ p.m.$ Which of the following statements is closest to her observation about the shape and size of the shadow?
  • A
    The shape of the shadow of the tree changes but the size remains the same.
  • B
    The size of the shadow of the tree changes but the shape remains the same.
  • ✓
    Both the size and shape of the shadow of the tree change.
  • D
    Neither the shape nor the size of the shadow changes.
Answer
Correct option: C.
Both the size and shape of the shadow of the tree change.

Since the position of the sun changes during the day, the size and shape of the shadow of the tree change. At $8:00\ am$ and $3:00\ pm,$ the lengths of the shadows of the tree will be longer than its actual length and is pointed towards West and the East directions, respectively. However, at $12:00$ noon, the sun will be just above the tree, so the shadow of the tree will be short.

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MCQ 1031 Mark
In which of the following medium speed of light is maximum?
  • A
    In air.
  • ✓
    In vacuum.
  • C
    In glass.
  • D
    In water.
Answer
Correct option: B.
In vacuum.
In vacuum.
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MCQ 1041 Mark
What is lateral inversion?
  • A
    Image becomes inverted.
  • B
    Image bends laterally.
  • ✓
    Right of the object appears left of the image.
  • D
    All of these happen.
Answer
Correct option: C.
Right of the object appears left of the image.
Right side of the object appears as left side in the image formed by a plane mirror.
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MCQ 1051 Mark
An incident ray falling normally on a plane mirror then angle of incidence is:
  • ✓
    $0^\circ$
  • B
    $120^\circ$
  • C
    $90^\circ$
  • D
    $60^\circ$
Answer
Correct option: A.
$0^\circ$
$0^\circ$
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MCQ 1061 Mark
All planets are:
  • ✓
    Non-luminous body
  • B
    Non-luminous during night
  • C
    Luminous during day
  • D
    Luminous body
Answer
Correct option: A.
Non-luminous body
All planets are non-luminous body because they do not emit their own light.
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MCQ 1071 Mark
The mirror image of $\text{TRANSPARENT}$ will be:
  • A
  • B
    $\text{TRANSPARENT.}$
  • ✓
  • D
    $\text{TNERAPSNART.}$
Answer
Correct option: C.
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MCQ 1091 Mark
Which of the following images are real?
  • A
    Image formed on the screen of cinema hall.
  • B
    Image formed by a pinhole camera.
  • C
    Image formed by a concave mirror when object is placed at infinity.
  • ✓
    All the above.
Answer
Correct option: D.
All the above.
All the above.
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MCQ 1101 Mark
Paheli observed the shadow of a tree at $8\ a.m.$ $12$ noon and $3\ p.m.$ Which of the following statements is closer to her observations about the shape and size of the shadow?
  • A
    The shape of the shadow of the tree changes but the size remains the same.
  • B
    The size of the shadow of the tree changes but the shape remains the same.
  • ✓
    Both size and shape of the shadow of the tree changes.
  • D
    Neither the shape nor the size of the shadow changes.
Answer
Correct option: C.
Both size and shape of the shadow of the tree changes.

Both the size and shape of the shadow of the tree will be changed because at $8\ a.m.$ and $3\ p.m.,$ the length of the shadows of free will be longer than its actual length and point to the west and the east directions, respectively. However, at $12$ noon, the sun will be high in the sky just above the tree, so the shadow of tree will be shot.

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MCQ 1111 Mark
Which of the following is/ are not always necessary to observe a shadow?
  • ✓
    Sun.
  • B
    Screen.
  • C
    Source of light.
  • D
    Opaque object.
Answer
Correct option: A.
Sun.
Sun is not always necessary to observe a shadow because any source of light, an opaque object and a screen are just necessary enough to see a shadow.
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MCQ 1121 Mark
Select the one that is a natural source of light.
  • A
    Lighted fluorescent tube
  • B
    Red hot iron bar
  • ✓
    Sun
  • D
    Trees
Answer
Correct option: C.
Sun
Sun
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MCQ 1131 Mark
We place an object $X$ in between a reflecting surface and a screen $Q,$ on which an image of $X$ is formed. If a clear image of object $X$ is formed on the screen $Q,$ then which of the following properties is true for object $X?$
  • A
    Transparent.
  • B
    Translucent.
  • ✓
    Opaque.
  • D
    All the above.
Answer
Correct option: C.
Opaque.
Opaque.
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MCQ 1141 Mark
The sun in the early morning can cause a building to form a shadow. The shadow will be:
  • A
    Fat
  • ✓
    Long
  • C
    Thin
  • D
    Short
Answer
Correct option: B.
Long
Our shadow is shortest at noon. The length of our shadow goes on decreasing till noon. The length of our shadow starts increasing in the afternoon. And our shadow becomes very long in the evening or early morning and just before sunset. As the sun rises in the sky, the shadow of a building shortens.
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MCQ 1151 Mark
Air and water are:
  • ✓
    Transparent and non luminous.
  • B
    Opaque and non luminous.
  • C
    Translucent and non luminous.
Answer
Correct option: A.
Transparent and non luminous.
Transparent and non luminous.
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MCQ 1161 Mark
Shadow can be seen only on:
  • ✓
    Screen
  • B
    Sky
  • C
    Mirror
  • D
    Transparent objects.
Answer
Correct option: A.
Screen
The shadow can be seen only on a screen. The ground, walls of a room a building, or other such surfaces act as a screen for the shadows you observe in everyday life.
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MCQ 1171 Mark
Nisha placed a stick in the playground at $8:15\ am$ in the morning. How will the shadow of the stick at $12:00$ noon be in comparison to the one at $8:15\ am?$
  • ✓
    It will be shorter than one at $8:15\ am.$
  • B
    It will be same as one at $8:15\ am.$
  • C
    It will be greater than one at $8:15\ am.$
  • D
    Shadow will not form at $12:00$ noon.
Answer
Correct option: A.
It will be shorter than one at $8:15\ am.$

Shadow formed is larger in the morning and evening as compare to the shadow at noon because at noon the sun is at top of the stick.

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MCQ 1181 Mark
Priyanshi is writing some statements but she confused to know whether the statements are correct or not? If you know the answer to this question, then tell her:
  • A
    We cannot see anything through an opaque object.
  • B
    Those materials which do not allow any light to pass through them are called opaque materials.
  • C
    If we cannot see through an object at all, it is not allowing any light to pass through it and hence it is an paque object.
  • ✓
    All the above
Answer
Correct option: D.
All the above
Here, are all the statements are correct. Hence, your answer will b
 
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MCQ 1191 Mark
Two students while sitting across a table looked down on to its top surface. They noticed that they could see their own and each other’s image. The table top is likely to be made of:
  • A
    Unpolished wood.
  • B
    Red stone.
  • ✓
    Glass sheet.
  • D
    Wood top covered with cloth.
Answer
Correct option: C.
Glass sheet.
The table top must be made of glass sheet because only a glass sheet can show the images of both the students, which can be seen by both of them.
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MCQ 1201 Mark
Which of the following is a non-luminous body?
  • A
    Sun
  • ✓
    Moon
  • C
    Stars
  • D
    All of these
Answer
Correct option: B.
Moon

Moon is non-luminous. It becomes visible when light from sun falls on it.

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MCQ 1211 Mark
Moon is a:
  • A
    Luminous body
  • ✓
    Non-luminous body
  • C
    Neither luminous nor non-luminious
  • D
    None of the above is correct
Answer
Correct option: B.
Non-luminous body
Moon reflects the sunlight falling on it.
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MCQ 1221 Mark
Which letters of English alphabet will not show lateral inversion?
  • ✓
    $I, O, U.$
  • B
    $N, Z, X.$
  • C
    $I, X, E.$
  • D
    $A, E, I.$
Answer
Correct option: A.
$I, O, U.$

$I, O, U$ will not show lateral inversion.

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MCQ 1231 Mark
The given figure is showing:
  • A
    Diverging mirror.
  • ✓
    Converging mirror.
  • C
    Converging lens.
  • D
    Diverging lens.
Answer
Correct option: B.
Converging mirror.
Converging mirror.
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MCQ 1241 Mark
Shape of a shadow depends on the:
  • A
    Colour of the opaque object.
  • B
    Shape of the screen.
  • ✓
    Shape of an opaque object.
  • D
    Colour of the screen.
Answer
Correct option: C.
Shape of an opaque object.
Shape of an opaque object.
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MCQ 1251 Mark
Riya and Priya were sitting around a round table. They noticed that they could see their own and each other's image onto the table top. Then table top is made of:
  • A
    Unpolished wood, covered with white cloth.
  • ✓
    Polished glass of red colour.
  • C
    Glass covered with cellophane paper.
  • D
    Smoked glass covered with green colour cloth.
Answer
Correct option: B.
Polished glass of red colour.
Polished glass of red colour reflects some of the light incident on it so images of the both persons are formed on it.
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MCQ 1261 Mark
As the sun rises in the sky, the shadow of a building:
  • A
    Lengthens
  • ✓
    Shortens
  • C
    Widens
  • D
    Darkens
Answer
Correct option: B.
Shortens
Our shadow is shortest at noon. The length of our shadow goes on decreasing till noon. The length of our shadow starts increasing in the afternoon. And our shadow becomes very long in the evening and just before sunset. As the sun rises in the sky, the shadow of a building shortens.
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MCQ 1271 Mark
Help us to see the objects.
  • A
    Opaque objects
  • B
    Water
  • ✓
    Light
  • D
    Transparent objects
Answer
Correct option: C.
Light
Light helps us to see the object around us. Eyes act as a camera creating image in our mind. The light falling on the objects around us reflects them to our eyes and as a result we can see the objects around us.
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MCQ 1281 Mark
Which of the following statements about shadows is Incorrect!
  • A
    The shadow of an object is formed on the opposite side of the light source.
  • B
    The position of the shadow changes with the position of the light source.
  • C
    The position of the shadow changes with the movement of the object.
  • ✓
    A transparent body produces a shadow.
Answer
Correct option: D.
A transparent body produces a shadow.
A transparent body does not produce a shadow. Shadows are formed by opaque bodies.
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MCQ 1291 Mark
There is no dark shadow formed by the glass when light is shone on it. This is because:
  • A
    It is not night time yet.
  • B
    The light is not strong enough.
  • ✓
    The glass is a transparent object.
  • D
    The distance between glass and screen is very large.
Answer
Correct option: C.
The glass is a transparent object.
The shadows are formed when the opaque object cuts off the light from the source. Since glass is transparent, it allows the light to pass through it. So no dark shadow is formed.
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MCQ 1301 Mark
Paheli observed the shadow of a tree at $8:00\ a.m., 12:00$ noon and $3:00\ p.m. $Which of the following statements is closest to her observation about the shape and size of the shadow?
  • A
    The shape of the shadow of the tree changes but the size remains the same.
  • B
    The size of the shadow of the tree changes but the shape remains the same.
  • ✓
    Both the size and shape of the shadow of the tree change.
  • D
    Neither the shape nor the size of the shadow changes.
Answer
Correct option: C.
Both the size and shape of the shadow of the tree change.

Both the size and shape of the shadow of the tree will be changed because at $8:00\ am$ and $3:00\ pm,$ the lengths of the shadows of tree will be longer than its actual length and point to the West and the East directions, respectively. However, at $12:00$ noon, the sun will be high in the sky just above the tree, so the shadow of tree will be short.

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MCQ 1311 Mark
A solid transparent sphere has a small opaque dot at its centre. When observed from outside, the apparent position of the dot will be:
  • A
    Closer to the eye than its actual position.
  • ✓
    The same as its actual position.
  • C
    Farther away from the eye than its actual position.
  • D
    None of these.
Answer
Correct option: B.
The same as its actual position.

As $u = – R;$

$\therefore$ $\frac{1}{v}-\frac{u}{-R}=\frac{1-u}{(-R)}$
​​​​​​​$\Rightarrow u= – R$

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MCQ 1321 Mark
Light is a form of energy produced by a
  • ✓
    luminous object
  • B
    non-luminous object
  • C
    transparent object
  • D
    opaque object
Answer
Correct option: A.
luminous object
Luminous objects produce their own light.
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MCQ 1331 Mark
Which of the following is used as a rear view mirror in vehicles?
  • A
    Concave mirror.
  • ✓
    Convex mirror.
  • C
    Converging mirror.
  • D
    Plane mirror.
Answer
Correct option: B.
Convex mirror.
Convex mirror.
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MCQ 1341 Mark
Which of the following emits light?
  • A
    The earth
  • ✓
    A television screen
  • C
    A shadow
  • D
    A table
Answer
Correct option: B.
A television screen
A television screen emits light.
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MCQ 1351 Mark
The moon is a non-luminous object but still it is visible to us. Why?
  • A
    The moonlight travels only in the form of rays.
  • ✓
    The moon reflects the light falling on it from the sun.
  • C
    The moonlight emits visible light.
  • D
    The moonlight travels in curved paths.
Answer
Correct option: B.
The moon reflects the light falling on it from the sun.
The moon is a non-luminous object but it reflects the light falling on it from the sun.
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MCQ 1361 Mark
Name the phenomenon due to which our right ear appears as left ear when we see our face in the mirror.
  • A
    Reflection.
  • ✓
    Lateral inversion.
  • C
    Eclipse.
  • D
    Refraction.
Answer
Correct option: B.
Lateral inversion.
Lateral inversion.
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MCQ 1371 Mark
Rahul places a candle in front of three cardboards each with a hole on them and observes on the other side. What inference does he make from the given experiment?
  • A
    Light rays are very thin.
  • ✓
    Light rays travel in straight lines.
  • C
    The eye can only see a luminous body.
  • D
    A beam of light is made up of a lot of light rays.
Answer
Correct option: B.
Light rays travel in straight lines.
Rahul is able to observe the candle as the holes in the pieces of cardboard are in a straight line. Light rays always travel in a straight line. He is able to see the candle due to rectilinear propagation of light.
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MCQ 1381 Mark
There is a light on earth even on a dark, cloudy day. This is because clouds are:
  • A
    Opaque
  • B
    Transparent
  • ✓
    Translucent
  • D
    Luminous
Answer
Correct option: C.
Translucent
We cannot see anything in detail through a translucent material. Clouds are also translucent objects. Though we cannot see the sun through clouds on a cloudy day but is still there is some sunlight all around. This is because being translucent, clouds allows some of the sunlight to pass through them due to which there is light on earth even on a cloudy day.
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MCQ 1391 Mark
A glass sheet is given to you. By which of the following methods, it can be converted into an opaque object without breaking?
  • A
    Combining another same glass sheet with the given glass sheet.
  • B
    Covering glass sheet with thin polyethene bag.
  • ✓
    Applying black paint on both sides of it.
  • D
    All the above.
Answer
Correct option: C.
Applying black paint on both sides of it.
Applying black paint on both sides of it.
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MCQ 1401 Mark
An artificial source of light is
  • A
    the sun.
  • B
    a firefly.
  • C
    the star.
  • ✓
    an electric bulb.
Answer
Correct option: D.
an electric bulb.
An artificial source of light is an electric bulb.
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MCQ 1411 Mark
____________ eclipse occurs when moon comes between sun and earth.
  • A
    Lunar.
  • ✓
    Solar.
  • C
    Partial lunar.
  • D
    Earth.
Answer
Correct option: B.
Solar.
Solar.
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MCQ 1421 Mark
Which types of objects do not allow light to pass through them?
  • A
    Translucent.
  • ✓
    Opaque.
  • C
    Transparent.
  • D
    Penumbra.
Answer
Correct option: B.
Opaque.
Opaque objects do not allow the light to pass through them while translucent objects allow only a part of light to pass through them.
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MCQ 1431 Mark
Consider the following statements and choose the incorrect one:
  • A
    The image formed in a plane mirror is at the same distance behind the mirror as the object is in front of it.
  • B
    The image in the plane mirror is of the same size as the object, neither large not diminished.
  • C
    The image formed in a plane mirror is virtual.
  • ✓
    The image in the plane mirror is inverted.
Answer
Correct option: D.
The image in the plane mirror is inverted.
The image in a plane mirror is laterally inverted or sideways reversed with respect to the object.
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MCQ 1441 Mark
An artificial source of light is:
  • A
    sun
  • B
    firefly
  • C
    jellyfish
  • ✓
    electric bulb
Answer
Correct option: D.
electric bulb
electric bulb
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MCQ 1451 Mark
Which of the following is not a necessary condition for the formation of a shadow?
  • A
    An opaque object
  • B
    A screen
  • ✓
    A transparent object
  • D
    A source of light
Answer
Correct option: C.
A transparent object
A transparent object
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MCQ 1461 Mark
An image is formed on a screen when:
  • A
    A transparent object is placed between the screen and the source of light
  • ✓
    An opaque object is placed between the screen and the source of light
  • C
    Both the above are correct
  • D
    None of the above is correct
Answer
Correct option: B.
An opaque object is placed between the screen and the source of light
An opaque object is placed between the screen and the source of light
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MCQ 1471 Mark
A device containing two plane mirrors which gives us a higher viewer than normal is:
  • A
    Stethoscope
  • B
    Microscope
  • ✓
    Periscope
  • D
    Telescope
Answer
Correct option: C.
Periscope
The periscope is a device which gives us the higher view than normal. By using a periscope, we can see the objects on the other side of a high wall without having to climb over the wall. A soldier sitting in a trench can observe the enemy activities above the ground by using a periscope. Actually, a periscope works on the reflection of light from the two plane mirrors angle two parallel to one another.
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MCQ 1481 Mark
Out of these, which one is not a man-made luminous body?
  • A
    Electric bulb.
  • B
    Burning candle.
  • C
    Firefly (Jugnu).
  • ✓
    Oil lamp.
Answer
Correct option: D.
Oil lamp.
Firefly (Jugnu) is a natural luminous body.
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[1 Marks Each] M.C.Q. - Page 3 - Science STD 6 Questions - Vidyadip