Question

A ray of light passes from a medium X to another medium Y. No refraction of light occurs if
the ray of light hits the boundary of medium Y at an angle of:
a). 120°
b). 90°
C). 45°
d). 0°​

Answer 1

Answer:

120°

Explanation:

A ray of light passes from a medium X to another medium Y. No refraction of light occurs if

the ray of light hits the boundary of medium Y at an angle of 120° .

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Answer 2

Explanation:

A}. 120

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