[" A concave mirror and a converging lens (glass with "mu=1.5" ) both have a focal length of "3cm" when in air."],[" When they are in water "(mu=(4)/(3))" ,their new focal lengths are "]

A concave mirror and convex lens (both of refractive index 1.5) have focal length 3 cm in air. When they are placed in water ofrefractive index 4/3 , then their new focal lengths will be ......

A convex glass Iens (mug = 1.5 ) has a focal length 8 cm when place in air. The focal length of the lens when placed in water (mu_w = 4/3) is—

A concave mirror and a convex lens are of the same focal length in air. When they are immersed in water

A thin lens made of glass of refractive index mu = 1.5 has a focal length equal to 12 cm in air. It is now immersed in water ( mu=4/3 ). Its new focal length is

A thin lens made of glass of refractive index muu = 1.5 has a focal length equal to 12 cm in air. It is now immersed in water ( mu=4/3 ). Its new focal length is

Assertion : A concave mirror and convex lens both have the same focal length in air. When they are submerged in water, they will have same focal length. Reason refractive index of water is smaller than be refractive index of air.

Assertion : A concave mirror and convex lens both have the same focal length in air. When they are submerged in water, they will have same focal length. Reason refractive index of water is smaller than be refractive index of air.

If a convex mirror-is emerged in water (mu_w=4//3) , then the focal length will be