A convex lens focusses an object 
from it on a screen placed 
away from it. A glass plate (refractive index 
) of thickness 
is inserted between the lens and the screen. What is the distance of the object from the lens, so that its image is again focused on the screen?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Glass slab shifts the image of convex lens by 
in the direction of incident light.
So, Image of convex lens is formed at distance
Now, 
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