Physics
Grade-7
Easy
Question
A concave lens forms a virtual, upright, and diminished image of an object ____.
- Sometimes
- Always
- Only when the object lies close to it
- Only when the object lies far away from it
The correct answer is: Always
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The lens of a pair of spectacles used by a person is thinner in the middle and thicker towards the edges. The lens used in the spectacles is ____.
The lens of a pair of spectacles used by a person is thinner in the middle and thicker towards the edges. The lens used in the spectacles is ____.
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Which lens is used in a magnifying glass?
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A light ray bends ____ on entering the air from ____.
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When a parallel beam of light falls on a surface of a convex lens, it ____ the rays of light in it to a point called ____.
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Concave lenses are ____ in the middle and ____ towards the edge.
Concave lenses are ____ in the middle and ____ towards the edge.
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Spherical lenses are _____ objects.
Spherical lenses are _____ objects.
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Convex lenses are ____ in the middle and ____ towards the edge
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Convex lenses are also called ___ lenses.
Convex lenses are also called ___ lenses.
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