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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°
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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°
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संबंधित प्रश्न
Write true or false of the following statement.
The image formed by a plane mirror is upright.
Fill in the blank
The incident ray, the reflected ray and the normal lie in one _______
Select the correct alternative
The angle of incidence on a plane mirror is 30°.The angle of reflection will be:
A ray of light falls normally on a plane mirror. What is the angle of incidence ?
Draw a ray diagram showing the formation of image of a point object by a plane mirror.
Define the following term
Incident ray
Define the following term
Normal
We can see a non-luminous object when the light
How many times is a ray of light reflected by two plane mirrors placed parallel and facing each other?
Assertion (A): A ray incident along normal to the mirror retraces its path.
Reason (R): In reflection, the angle of incidence is always equal to the angle of reflection.
