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प्रश्न
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)
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उत्तर
Water is rarer than glass.
Light travels from water to glass mean light travels from a rarer to a denser medium.
The incident ray is AO.
Angle of incidence is ∠i
Angle of refraction is ∠r
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संबंधित प्रश्न
Define the following terms used in the study of reflection of light by drawing a labelled ray-diagram:
(a) Incident ray
(b) Point of incidence
(c) Normal
(d) Reflected ray
(e) Angle of incidence
(f) Angle of reflection
Explain why, though both a plane mirror and a sheet of paper reflect light but we can see the image of our face in a plane mirror but not in a sheet of paper.
Name the phenomenon due to which a swimming pool appears less deep than it really is.
Show the lateral displacement of the ray on the diagram.
Water is optically denser than glass.
Light changes its direction when going from one transparent medium to another transparent medium. This is called _______.
Write scientific reason.
A pencil appears to be broken near the surface of water.
In the above diagram light is travelling through different media. It is noted by a scientist that ∠1= ∠3 = ∠4 but ∠2 < ∠1. Which of the following statement would be correct?
A star appears twinkling into the sky because of the reflection of light by the atmosphere.
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 |
