A beam of light is converging towards a point 
on a screen. A plane parallel plate of glass whose thickness is in the direction of beam 
, refractive index 
is introduced in the path of the beam. The convergence point is shifted by
A
away
B
away C
nearer
D
nearer
Text Solution
Verified by ExpertsThe correct answer is:
C
When a glass plate of thickness 
is introduced, then the optical path increases by 
. So, the convergence point shifts nearest by 
.
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