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प्रश्न
A ray of light strikes a plane mirror such that its angle of incidence is 30°. What angle does the reflected ray make with the mirror surface?
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उत्तर
The reflected ray makes an angle of 60o with the mirror surface because:
angle of incidence = angle of reflection = 30o, and
angle of the reflected ray with the mirror surface = 90o - angle of reflection = 90o - 30o = 60o
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संबंधित प्रश्न
State the uses of plane mirrors.
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Write all the capital letters of the alphabet which look the same in a plane mirror.
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A small air bubble in a glass block when seen from above appears to be raised because of ______.
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List four characteristics of the image formed by a concave lens of focal length 20 cm when the object is placed at a distance of 40 cm from its optical centre.
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Observe the given figure and write appropriate phenomenon of light in the box.
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When light passes from one medium to another the ray gets bent. This property of light is called ______.
Match the following:
| Column I | Column II | ||
| 1. | r > 90 | a. | Light gazes at the surface of separation between the two modes. |
| 2. | r = 90 | b. | No refraction. |
| 3. | r < 90 | c. | Refracted ray away from the normal |
