A thin lens, made of glass of refractive index `3//2,` produces a real and magnified image of an object in air. If the whole system, maintaining the same distance between the object and the lens, is immersed in water `(RI=4//3),` then the image formed will be

Options

A. real, magnified
B. real,diminished
C. virtual, magnified
D. virtual,diminished

Answer

C

Explanation

In air, object lies between `F and 2F.`
In liquid, focal length will becomes 4 times. So,
object will now lie between optical centre and
focus.