A ray of light makes an angle of 10^o with th | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Let the incident ray make an angle of $10^o$ with the horizontal. The mirror is inclined at an angle $	heta$ to the horizontal.The angle between

Vedclass · Accepted Answer

$40$

Vedclass · Answer

(A) Let the incident ray make an angle of $10^o$ with the horizontal. The mirror is inclined at an angle $	heta$ to the horizontal.The angle between the incident ray and the mirror surface is $	heta - 10^o$.According to the law of reflection,the angle of incidence equals the angle of reflection.Let the normal to the mirror make an angle $\alpha$ with the vertical. Since the mirror is inclined at $	heta$ to the horizontal,the normal is inclined at $	heta$ to the vertical.The angle of incidence $i$ is the angle between the incident ray and the normal. From the geometry,$i = 90^o - (	heta + 10^o)$.The angle of reflection $r$ is the angle between the reflected ray and the normal. Since the reflected ray is vertical,$r = 	heta$.By the law of reflection,$i = r$,so $90^o - 	heta - 10^o = 	heta$.$2	heta = 80^o$.$	heta = 40^o$.

$A$ ray of light makes an angle of $10^o$ with the horizontal above it and strikes a plane mirror which is inclined at an angle $\theta$ to the horizontal. The angle $\theta$ for which the reflected ray becomes vertical is......$^o$

Similar Questions

Which of the following sets of letters does not show lateral inversion?

An object shaped as $L$ is placed between two parallel plane mirrors as shown. In the first seven closest images,how many laterally inverted images are formed?

$A$ light ray makes an angle of $10^{\circ}$ with the horizontal. It is incident on a plane mirror which makes an angle $\theta$ with the horizontal. If the reflected ray travels in the vertically upward direction,then $\theta = .....^{\circ}$

$A$ ray reflected successively from two plane mirrors inclined at a certain angle undergoes a deviation of $300^o$. The number of observable images is:

$A$ light ray makes an angle of $10^o$ with the horizontal. It strikes a plane mirror inclined at an angle $\theta$ to the horizontal,and the reflected ray becomes vertical. What is the value of the angle $\theta$ in degrees?

Vedclass Test Series

Exam Paper Generator

Online Exam Module