Advertisements
Advertisements
Question
Two mirrors A and B are placed at right angles to each other as shown in the figure.
A ray of light incident on mirror A at an angle of 25° falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be
Options
25°
50°
65°
115°
Solution
65°
Explanation -
Both the mirrors are inclined to each other at 90°. This means that the normal of both the mirrors will also be perpendicular to each other. We know that the angle of incidence is equal to the angle of reflection. Hence, the angle made by a reflected ray with normal is 25°.
Hence, x + 25° = 90°
x = 65°
APPEARS IN
RELATED QUESTIONS
Write true or false of the following statement.
The image formed by a plane mirror is upright.
Select the correct alternative
The angle of incidence on a plane mirror is 30°.The angle of reflection will be:
Select the correct alternative
The angle of incidence on a plane mirror is 30°. The angle between the incident ray and the reflected ray is
In the following diagrams, measure and write the angle of incidence and draw the reflected ray in a given case.
State in words, how do you find the location of image of an object formed by a plane mirror.
Define the following term
Incident ray
Define the following term
Normal
A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in the figure. The pencil of light coming out of the hole falls on a mirror.
At which point should the eye be placed, so that the hole can be seen?
How many times is a ray of light reflected by two plane mirrors placed parallel and facing each other?
The angle formed between the reflected ray and the normal is ______.
