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प्रश्न
A ray of light when passes from glass to air, bends towards the normal.
विकल्प
True
False
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उत्तर
False.
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संबंधित प्रश्न
Fill in the following blank with a suitable word:
When light is reflected, the angles of incidence and reflection are ............ .
Define the following terms used in the study of reflection of light by drawing a labelled ray-diagram:
- Incident ray
- Point of incidence
- Normal
- Reflected ray
- Angle of incidence
- Angle of reflection
Explain how to read the following message which was found on some blotting paper:
A ray of light passes from air into a block of glass. Does it bend towards the normal or away from it?
Water is optically .......... than air.
Draw a diagram showing the refraction of a light ray from water to glass. Label on it the incident ray, the angle of incidence (/), and the angle of refraction (r)
Explain how the formation of a rainbow occurs.
Right or wrong sentence.
The incident rays and refracted rays are on opposite sides of the column.
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 |
When light travels from a denser medium to a rarer medium, its speed:
