A plano convex lens of refractive index 1.5 and radius of curvature 30 cm is silvered at the curved surface. Now this lens has been used to from the image of an object. At what distance from this lens an object be placed in order to have a real image of the size of the object.
Text Solution
Verified by ExpertsThe correct answer is:
A
To get real image of the size of the object, object should be placed at the centre of curvature of equivalent mirror.
f m = – 15cm
and 
F 2 = – 10 cm
Hence, object should be placed at 20cm from the combination
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