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For the same angle of incidence the angl...

For the same angle of incidence the angles fo refreaction in media P,Q ,R and S are `50^(@) ,40^(@),30^(@),20^(@)` respectively the speed of lights is minimum in medium

A

P

B

Q

C

R

D

S

Text Solution

Verified by Experts

The correct Answer is:
D
`mu = (sin i)/(sin r) = (V_(a))/(V_(m))`
`:. V_(m) oo sin r`
Thus, for medium S speed is minimum.
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