1.
Refraction of light is due to change in ________ of light.
2.
The refractive index of two media A and B are 1.33 and 1.54 . The velocity of light is least in
3.
The absolute refractive index of water and glass respectively are 4/3 and 3/2 , then the relative index of glass with respect to water is ______
4.
The refractive index of diamond is
5.
The angle formed by the refracted ray and the normal at the surface is called
6.
In which the velocity of light is high
7.
The main cause for the brilliance of diamond is______
8.
At critical angle of ncidence , the angle of refraction is
9.
In the given figure, among the two media A and B, which one is dencer ?
10.
Raju is doing an experiment with the glass slab. He focussed the light towards the glass at angle of 30⁰. What would be the angle of emergence.
11.
The speed of light in Vacuum is
12.
If critical angle is 30⁰, then refractive index of the medium is _______
13.
The blue colour of the sky is due to
14.
STATEMENT A: Light changes its direction when it is reflected.
STATEMENT B: Light changes its speed when it travels in different media.
15.
A transparent medium of lower refractive index is also called
16.
The basic principle behind working of optical fibre is
17.
Angle of refraction in the given picture is
18.
Angle of incidence (i) , angle of refraction ( r) , Then refractive index (n)
19.
Suppose you are inside the water in a swimming pool. Your friend is standing on the edge of the swimming pool, your friend appears to be
20.
The material used to make the optical fibre
