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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
पर्याय
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 objects are seen around us due to irregular reflection of light.
Explain the following terms:
Incident ray, Reflected ray, Angle of incidence, Angle of reflection, Normal.
In the following diagrams, measure and write the angle of incidence and draw the reflected ray in each case.
In the following diagram, measure and write the angle of incidence and draw the reflected ray.
Draw a ray diagram showing the formation of image of a point object by a plane mirror.
Define the following term
Reflected ray
Define the following term
Normal
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.
A ray of light fall on a plane surface at an angle of incidence of 9° and reflection occurs. Calculate the angle of reflection in degree.
