Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Time taken by light to travel in two different materials 
and 
of refractive indices 
and 
of same thickness is 
and 
respectively. If 
and the ratio of 
to 
is 
. Then the thickness of material, in meter is : (Given 
and 
are velocities of light in 
and 
materials respectively).
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Let the thickness is 
As 
Or 
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