A thin glass prism of refractive index 1.5 is immersed in water of refractive index 1.3. If the angle of deviation in air for a particular ray be D,then that in water is
A thin glass prism of refractive index 1.5 is immersed in water of refractive index 1.3. If the angle of deviation in air for a particular ray be D,then that in water is










