A convex lens of focal length `20 cm` and made of glass `(mu = 1.5)` is immersed in water of `mu = 1.33` Calculate change in focal length of the lens.

A convex lens of focal legnth 0.2 m and made of glass (mu = 1.50) is immersed in water (mu = 1.33) . Find the change in the focal length of the lens.

A convex lens of focal legnth 0.2 m and made of glass (mu = 1.50) is immersed in water (mu = 1.33) . Find the change in the focal length of the lens.

A convex lens of focal length 0.2 m and made of glass 9mu=1.50) is immersed in water 9mu=1.33) .Find the chajnge in the focal length of the lens.

A convex glass lens of focal length 20 cm and refractive index 1.5 is immersed in water of R.I. 4//3 . What is the change in its focal length ?

A convex lens focal lenghts 30 cm made of glass of refractive index 1.5 is immersed in water having refrctive 1.33 . The change in the focal length of lens is

A convex lens focal lenghts 30 cm made of glass of refractive index 1.5 is immersed in water having refrctive 1.33 . The change in the focal length of lens is

Convex lens of focal length f made of glass of R.I. 1.5 is immered in water if R.I 4//3 focal length is

A convex lens of focal length 20 cm made of glass of refractive index 1.5 is immersed in water having refractive index 1.33 . The change in the focal length of lens is