Questions

True False[1 Marks ]

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25 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
A concave mirror always forms a real image. $(T/F)$
Answer
False.
A concave mirror can form both real and virtual images.
The nature of the image depends on the distance of the object from the mirror.
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Question 21 Mark
A real image cannot be obtained on a screen. $(T/F)$
  • True
  • False
Answer
False.
The image that can be obtained on a screen is called a real image. Virtual images cannot be obtained on a screen.
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Question 31 Mark
We can obtain a real, enlarged and inverted image by a concave mirror. $(T/F)$
  • True
  • False
Answer
TrueThe image formed by a concave mirror can be real or virtual, enlarged or diminished, and erect or inverted, depending upon the distance of the object from the mirror.
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Question 41 Mark
A concave lens always forms a virtual image. $(T/F)$
  • True
  • False
Answer
TrueThe image formed by a concave lens is always virtual, erect and diminished.
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Question 51 Mark
We can obtain an enlarged and erect image by a convex mirror. $(T/F)$
  • True
  • False
Answer
FalseThe image formed by a convex mirror is always virtual, diminished and erect.
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Question 91 Mark
A concave lens can be used to produce an enlarged and erect image.True/ False.
Answer
False.
A concave lens can be used to produce an erect and diminished (smaller than the object image).
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Question 121 Mark
In a convex spherical mirror, reflection of light takes place at a bent in surface. True/ False.
Answer
False.
In a convex spherical mirror, reflection of light takes place out the bent out (bulging out) surface.
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Question 141 Mark
Real images form on the side of a mirror where the object is, and virtual images form on the opposite side. True/ False.
Answer
True.
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Question 151 Mark
The image formed in a plane mirror is erect, enlarged and virtual. True/ False.
Answer
False.
The image formed in a plane mirror is always erect and virtual.
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Question 161 Mark
The mirror which can form a magnified image of an object is both convex and concave mirrors. True/ False.
Answer
False.
A concave mirror is a mirror which forms the magnified image of an object.
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Question 171 Mark
A convex lens always produces a real image.True/ False.
Answer
False.
​​​​​​​No, a convex lens does not always produce a real image because when the object is placed close to the convex lens, then the image formed by convex lens is virtual, erect and larger than the object.
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Question 181 Mark
As the distance of the object from the mirror increases, the distance of the image also increases. True/ False.
Answer
True.
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Question 221 Mark
A concave mirror always forms an erect and diminished image of the object. True/ False.
Answer
False.
A concave mirror always forms an erect, virtual and enlarged (larger than the object) image.
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Question 241 Mark
A virtual image is larger than the object can be produced by a convex mirror. True/ False.
Answer
False.
An enlarged image is always larger than the object and is always formed by a concave mirror.
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Question 251 Mark
Placing a mirror near lights, and table lamps reflects the light over a larger area, and makes the room appear brighter. True/ False.
Answer
True.
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True False[1 Marks ] - Science STD 7 Questions - Vidyadip