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Question
Which property of light makes a pencil cast a shadow when it is held in front of a light source?
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Solution
One property of light that makes a pencil cast a shadow when it is held in front of it is that light travels in a straight line.
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With the help of a diagram, show how when light falls obliquely on the side of a rectangular glass slab, the emergent ray is parallel to the incident ray.
State two factors on which the lateral displacement of the emergent ray depends.
When a ray of light travelling in glass enters into water obliquely:
(a) it is refracted towards the normal
(b) it is not refracted at all
(c) it goes along the normal
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A ray of light when passes from glass to air, bends towards the normal.
A real image is formed by the light rays after reflection or refraction when they:
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- appear to meet when they are produced in the backward direction.
- appear to diverge from a point.
Which of the above statements are correct?
A ray of light traveling in medium 1 strikes and travels into another transparent medium 2. If the speed of light is greater in medium 1, the ray will ______.
The ratio of the sine of the angle of incidence to the sine of ______ is constant.
Which is optically denser out of the two medium M1& M2 having the refractive indices = 1.71 and 1.36 respectively?
Under what circumstances there won’t be any refraction of light when it enters from one medium to another?
How do twinkling stars occur? (or) what is the cause of the twinkling of stars?
The bottom of swimming pool appears to be less deep than the actual one because of
When a ray of light travels normal to the given surface, then the angle of refraction is ______.
