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प्रश्न
State whether the following statement is true or false:
Refraction occurs because light slows down in denser materials.
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उत्तर
This statement is true.
Explanation:
The refraction of light is due to the change in the speed of light when going from one medium to other. The speed of a light ray slows down in denser materials.
संबंधित प्रश्न
What is the difference between regular reflection of light and diffuse reflection of light?
The image of an object formed by a plane mirror is:
(a) virtual
(b) real
(c) diminished
(d) upside-down
If a ray of light goes from a rarer medium to a denser medium, will it bend towards the normal or away from it?
Light travels more quickly through water than through glass.
If a ray of light passes from glass into water, which way will it bend : towards the normal or away from the normal?
Explain with the help of a labelled ray diagram, why a pencil partly immersed in water appears to be bent at the water surface. State whether the bending of pencil will increase or decrease if water is replaced by another liquid which is optically more dense than water. Give reason for your answer.
Due to _______ pencil looks bent in water, in the given experiment.
Right or wrong sentence.
The incident rays and refracted rays are on opposite sides of the column.
Which object use the reflection of light?
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 |
The bottom of swimming pool appears to be less deep than the actual one because of
