Question

A black spot on the surface of a glass sphere of
refractive index (u=3/2) is viewed from diametrical
opposite position. It appears to be at a distance
of 10 cm from spot. Diameter of sphere is
(1) 5 cm
(2) 10 cm
(3) 15 cm
(4) 20 cm

Answer 1

Answer:

1) is a answer of these equation