MEDIUM
8th CBSE
IMPORTANT
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Which of the following diagrams correctly shows the 'bending of a light ray' as it goes from an optically denser medium into an optically rarer medium?

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Important Questions on Refraction and Dispersion of Light

MEDIUM
8th CBSE
IMPORTANT

The angle, between the incident ray and the emergent ray, for a rectangular glass slab is _____.

MEDIUM
8th CBSE
IMPORTANT

Which of the following figures correctly represents the passage of white light through a glass prism?

MEDIUM
8th CBSE
IMPORTANT

An incident ray, passing through the optical centre of a concave lens, after refraction through it, will _____.

HARD
8th CBSE
IMPORTANT

When an object approaches a convex lens, from infinity towards its focus, the image formed by it _____.

MEDIUM
8th CBSE
IMPORTANT

Tanya's grandmother needs a lens to read small letters in her book. For this she should use_____.

MEDIUM
8th CBSE
IMPORTANT

Light propagates faster through a Medium A than through another Medium B. Which of the two media has a higher optical density?

MEDIUM
8th CBSE
IMPORTANT

Light propagates faster through a medium A than through another medium B. State the condition under which no change in the direction of propagation of a light ray would take place when it passes from Medium A to Medium B.

MEDIUM
8th CBSE
IMPORTANT

Why does a pencil appear bent when it is partially  dipped in water?