There is an equiconcave glass lens with radius of each face as R and `._(a)mu_(g) = 3//2` and `._(a)mu_(W) = 4//3` . If there is water in object space and air in image space, then the focal length is

An equi-convex glass lens with radius of each face as R is placed in air (._au_g=3//2) . "If there is water in the object space and air in the image space and given" ._au_w=4//3 , the focal length of the lens is

In the above question if there is air in the object space and water in the image space, then the focal length is

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

The deviation produced by a thin glass prism placed in air, when immersed in water is [Given ""_(a)mu_(g) = 3//2 and ""_(a)mu_(w) = 4//3 ]

The deviation produced by a thin glass prism placed in air, when immersed in water is [Given ""_(a)mu_(g) = 3//2 and ""_(a)mu_(w) = 4//3 ]

The ratio of angle of minimum deviation of a prism in air and when dipped in water will be (._(a)mu_(g)=3//2 and ._(a)mu_(w)=4//3)