A right-angled prism of apex angle `4^(@)` and refractive index 1.5 is located in front of a vertical plane mirror as shown in figure. A horizontal ray of light is falling on the prism. Find the total deviation produced in the light ray as it emerges 2nd time from the prism.

A prism having an apex angle of 4^@ and refractive index of 1.50 is located in front of a vertical plane mirror as shown in the figure. A horizontal ray of light is incident on the prism. The total angle through which the ray is deviated is:

A prism having an apex angle of 4^@ and refractive index of 1.50 is located in front of a vertical plane mirror as shown in the figure. A horizontal ray of light is incident on the prism. The total angle through which the ray is deviated is:

A prism having a refracting angle 4^(@) and refractive index 1.5 is located in front of a vertical plane mirror as shown. A horizontal ray of light is incident on the prism. What is the angle of incidence at the mirror ?

A prism having an apex angle 4^(@) and refractive index 1.5 is located in front of a vertical plane mirror as shown in figure. Through what total angle is the ray is deviated after reflection from the mirror ?

A prism having an apex angle 4^(@) and refractive index 1.5 is located in front of a vertical plane mirror as shown in figure. Through what total angle is the ray is deviated after reflection from the mirror ?

A small angled prism of apex angle A=4^@ and refractive index mu=1.5 is placed in front of a vertical plane mirror as shown in figure. If the mirror is rotated through an angle theta, then the light ray becomes horizontal either after the mirror or after second time passing from the prism in opposite direction. The value theta is

A small angled prism of apex angle A=4^@ and refractive index mu=1.5 is placed in front of a vertical plane mirror as shown in figure. If the mirror is rotated through an angle theta, then the light ray becomes horizontal either after the mirror or after second time passing from the prism in opposite direction. The value theta is