Refractive index one shot ! Refractive index class -10 term-1

Refractive index of lonosphere is

Absolute refractive index of a medium is X. Refractive index of same medium w.r.t to air is Y and absolute refractive index to air is Z. Then the relation between them is

The highest refractive index is of :

A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is (refractive index of water =1.33 )

In optical fibre, refractive index of inner part is 1.68 and refractive index of outer part is 1.44. The numerical aperture of the fibre is

A lens of refractive index n is put in a liquid of refractive index n' . If focal length of lens in air is f , its focal length in liquid will be.

Refractive index of glass is (3)/(2) and refractive index of water is (4)/(3) . If the speed of light in glass is 2.00 xx 10^(8) m/s, the speed in water will be

A glass slab of thickness 8 cms contains the same number of waves as 10 cms long path of water when both are traversed by the same monochromatic light. If the refractive index of water is 4/3, the refractive index of glass is

Calculate the critical angle of glass and water pair. (The refractive index for glass is 1.50 and refractive index for water is 1.33).

State how focal length of a glass (Refractive index 1.5) changes when it is completely immersed in: (i) Water (Refractive index 1.33) (ii) A liquid (Refractive index 1.65)