The refractive indices of four materials A, B, C and D are 1.03, 1.13, 1.92 and 1.72 respectively. When the light rays pass from air into these materials, they refract the maximum in:

Light travels through air at 300 million ms^-1. On entering water it slows down to 225 million ms^-1. Calculate the refractive index of water.

The refractive indices of four substances P, Q, Rand S are 1.50, 1.36, 1.77 and 1.31 respectively. The speed of light is the maximum in the substance:

The refractive index of glass for light going from air to glass is . The refractive index for light going from glass to air will be:

The refractive indices of four media A, B, C and Dare 1.44, 1.52, 1.65 and 1.36 respectively. When light travelling in air is incident in these media at equal angles, the angle of refraction will be the minimum: