A plano-convex lens of focal length 10 cm is silvered at its plane face. The distance d at which an object must be placed in order to get its image on itself is:
Text Solution
Verified by ExpertsThe correct answer is:
C
= 
⇒ 
= 
⇒ R = 5 cm
Rays should extance the path ⇒ incident rays on mirror should be normal
⇒ 
– 
= 
[u = – d, as lens is their
⇒ 
= 
⇒ d = 10 cm
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