When a ray of light passes from one medium to another medium, the angle incidence is always different from the angle of refraction.

Q.

A ray of light is incident on a medium at an angle 60°. The angle of refraction is different for different mediums for an angle of incidence = 60${}^{\circ }$.

In which medium is the speed of light lowest?

Q. When a ray of light travels from an optically more denser medium to an optically less denser medium, the angle of incidence is always .......... than the angle of refraction.

Q. Mark the correct statement/statements:
a) Angle of incidence is equal to angle of refraction
b) Angle of refraction is smaller than angle of incidence when light ray travels from rarer medium to denser medium.
c) Angle of refraction is greater than angle of incidence when light ray travels from denser medium to rarer medium.

Q. When a light ray is refracted from one medium into another the wavelength change from $4500A^0$ to $3000A^0$ the critial angle for a ray from second medium to first medium is

Q. A ray of light is incident from one medium $(\mu =1.5)$ into another medium. If the angle of incidence and refraction are, respectively, $60$ and $45$, then what will be the refractive index of the denser medium?