On the basis of above figure. Light from which source will form shadow on the screen $S?$
- ALight source $A.$
- BLight source $B.$
- ✓Light source $C.$
- DAll the above.
Answer: C.
View full solution →Question types
Light, Shadows and Reflections question types
296 questions across 9 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
296
Questions
9
Question groups
5
Question types
01
[1 Marks Each] M.C.Q.
148 Q→02Assertion (A) & Reason (B) MCQ
3 Q→03[1 Marks Each] Blanks
22 Q→04True Or False.[1 Marks Each]
16 Q→05[1 Marks Each] QUE - ANS
65 Q→06[3 Marks Each] QUE-ANS
17 Q→07[5 Marks Each] QUE-ANS
7 Q→08case /data -based (4 Marks)
1 Q→09Answer The Following Questions In Short.[2 Marks Each]
17 Q→Sample Questions
Light, Shadows and Reflections questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Which of the following is not a primary colour of white light?
- ARed.
- BGreen.
- ✓Orange.
- DBlue.
Answer: C.
View full solution →Which of the following materials can transmit most of the light?
- ✓A glass block
- BA piece of blank paper
- CA spot of black ink
- DA placid lake surface
Answer: A.
View full solution →How does light travel?
- ✓Rectilinear propagation
- BRandom motion
- CCurvilinear motion
- DCircular motion
Answer: A.
View full solution →What type of object is sheet of cellophane?
- ✓Transparent.
- BTranslucent.
- COpaque.
Answer: A.
View full solution →Assertion – Never ever look directly at the sun that could be extremely harmful for eyes. Reason – Pin hole camera can be used to brightly little objects.
- AAssertion and reason both are correct statement and reason is correct explanation for assertion.
- ✓Assertion and reason both are correct statement and reason is not correct explanation for assertion.
- CAssertion is correct statement but reason is wrong statement.
- DAssertion is wrong statement but reason is correct statement.
Answer: B.
View full solution →Assertion – When light falls on the mirror it get reflected. Reason – When light falls on transparent object reflection of light happed.
- ✓Assertion and reason both are correct statement and reason is correct explanation for assertion.
- BAssertion and reason both are correct statement and reason is not correct explanation for assertion.
- CAssertion is correct statement but reason is wrong statement.
- DAssertion is wrong statement but reason is correct statement.
Answer: A.
View full solution →Assertion – there are three types of objects which frequently allowed the passing of light. Reason – transparent objects do not allow pass through them.
- AAssertion and reason both are correct statement and reason is correct explanation for assertion.
- BAssertion and reason both are correct statement and reason is not correct explanation for assertion.
- ✓Assertion is correct statement but reason is wrong statement.
- DAssertion is wrong statement but reason is correct statement.
Answer: C.
View full solution →$.........$ objects allows light to pass through them partially.
View full solution →Fill in the blanks with appropriate words:
This is a $.........$ on which the shadow is formed.
View full solution →This is a $.........$ on which the shadow is formed.
Fill in the blanks with appropriate words:
A $.........$ is a dark outline of an opaque object that blocks light coming from a source.
View full solution →A $.........$ is a dark outline of an opaque object that blocks light coming from a source.
Pinhole camera produces $.........$ image.
View full solution →$.........$ object makes shadows.
View full solution →Light gets reflected when strikes a shiny surface. True/ False
Jugnu (Firefly) is a living luminous body. True/ False
All the shining bodies in sky have their own light. True/ False
A reflected image gives us more information about the object than a shadow. True/ False
Mirror changes direction of light that falls on it. True/ False.
Why we cannot see our image in the mirror in complete dark room?
What is an obstacle?
Rearrange the boxes given below to make a sentence that helps us understand opaque objects.
Activity.Fix a comb on one side of a large thermocol sheet and fix a mirror on the other side as shown in the figure. Spread a dark-coloured sheet of paper between the mirror and the comb. Keep this in sunlight or send a beam of light from a torch through the comb.
What do you observe? Do you get a pattern similar to that shown in figure?
What do you observe? Do you get a pattern similar to that shown in figure?
What do we need in order to see a shadow?
What is a shadow? How is it formed? How does the colour of an opaque object affect the colour of the shadow?
What are transparent, translucent and opaque objects? Explain with example.
Is air around us always transparent? Discuss.
In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?
A football match is being played at night in a stadium with flood lights $ON$. You can see the shadow of a football kept at the ground but cannot see its shadow when it is kicked high in the air. Explain.
View full solution →What is the difference between image and shadow?
What is a shadow? How is it formed? How does the colour of an opaque object affect the colour of the shadow?
What are the different types of object based on their ability to pass the light? Give suitable examples of each objects.
A student had a ball, a screen and a torch in working condition. He tried to form a shadow of the ball on the screen by placing them at different positions. Sometimes the shadow was not obtained. Explain.
Activity.Place a chair in the school ground on a sunny day. What do you observe from the shadow of the chair?
- Does the shadow give an accurate picture of the shape of the chair? If the chair is turned around a little, how does the shape of the shadow change?
- Take a thin notebook and look at its shadow. Then, take a rectangular box and look at its shadow. Do the two shadows seem to have a similar shape?
- Take flowers or other objects of different colours and look at their shadows. A red rose and a yellow rose, for instance. Do the shadows look different in colour, when the colours of the objects are different?
- Take a long box and look at its shadow on the ground. When you move the box around, you may see that the size of the shadow changes. When is the shadow of the box the shortest, when the long side of the box is pointed towards the Sun or when the short side is pointing towards the Sun?
The diagram shows a light source, an opaque object and a screen.
$6.$ What will be the shape of the shadow on the screen?
$7.$ Why does a rubber ball cast a shadow but a glass ball does not? r.
$8.$ What makes us see ourselves when we stand in front of a mirror?
View full solution →$6.$ What will be the shape of the shadow on the screen?
$7.$ Why does a rubber ball cast a shadow but a glass ball does not? r.
$8.$ What makes us see ourselves when we stand in front of a mirror?
Three torches $A, B$ and $C$ shown in Fig. are switched on one by one. The light from which of the torches will not form a shadow of the ball on the screen.
View full solution →Distinguish between the following.
Opaque objects and Transparent objects.
Opaque objects and Transparent objects.
Give two examples of each.
- Transparent and non luminous object.
- Translucent and non luminous object.
What is the difference between transparent and translucent object?
Distinguish between the following.
Luminous body and Non-luminous body.
Luminous body and Non-luminous body.
Generate a Light, Shadows and Reflections paper free
Pick question groups from the list above, set marks and difficulty, and export a branded PDF with step-by-step answer keys. First 3 chapters free — no signup.