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Refraction at Planar Surface

When a ray of...

Question

When a ray of light from air enters a denser medium, it :

(a) bends away from the normal

(b) bends towards the normal

(c) goes undeviated

(d) is reflected back.

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Solution

The ray of light bends towards the normal. As the speed of light decreases in the denser medium, it bends towards the normal.

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