Find focal lengths of lenses made of glass `(mu=3//2)` and placed in air.

Refractiven index of glass is 3/2 and that of water is 4/3 w.r.t. air. Calculate the ratio of focal length of a lens made of the glass when placed in water and air.

A convex lens of focal length 12 cm is made of glass of mu=(3)/(2) . What will be its focal length when immersed in liquid of mu=(5)/(4) ?

A convex lens of focal length 12 cm is made of glass of mu=(3)/(2) . What will be its focal length when immersed in liquid of mu=(5)/(4) ?

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 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 lens made of glass (mu_(g)=3//2) has focal length f in air. The image of an object placed in front of it is inverted, real and magnified. Now the whole arrangement distance between object and lens. Then

A convex lens made of glass (mu_(g)=3//2) has focal length f in air. The image of an object placed in front of it is inverted, real and magnified. Now the whole arrangement distance between object and lens. Then

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.

The focal length of a convex lens of glass (mu = 1.5) in air is 30 cm. Find its focal length when the lens is placed in water (mu = 4//3) .