Advertisements
Advertisements
प्रश्न
Two mirrors A and B are placed at right angles to each other as shown in the following 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
विकल्प
25°
50°
65°
115°
Advertisements
उत्तर
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
संबंधित प्रश्न
Select the correct alternative
The angle of incidence on a plane mirror is 30°.The angle of reflection will be:
In the following diagram, measure and write the angle of incidence and draw the reflected ray.
Define the following term
Incident ray
Define the following term
Reflected ray
Light is falling on surfaces S1 S2 and S3 as shown in the following figure.
|
|
|
|
|
|
Surfaces on which the angle of incidence is equal to the angle of reflection is/are
A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in the following 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?
Draw figure showing the position of the plane mirror. Also, label the angle of incidence and angle of reflection on it.
There is a mistake in each of the following ray diagrams given as figures a, b, and c. Make the necessary correction (s).
 |
 |
 |
| (a) | (b) | (c) |
Angle of incidence is greater than the angle of reflection.
Diffused reflection gives a sharp image.
