A thin convex lens L (refractive index = 1.5 ) is placed on a plane mirror M. When a pin is placed at A, such that OA = 18 cm, its real inverted image is formed at A itself, as shown in figure. When liquid of refractive index 
is put between the lens and the mirror, the pin has to be moved to A’ , such that OA’ = 27 cm, to get its inverted real image at A’ itself. The value of 
will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
When 
is filled between lens and mirror,
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