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प्रश्न
The depth of a pond when seen from above appears to be less.
पर्याय
True
False
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उत्तर
True.
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संबंधित प्रश्न
| Column I | Column II | Column III | |
| 1 | Dispersion | Long-sightedness | Twinkling of stars |
| 2 | Refraction | Splitting of white light into component colours | Convex lens |
| 3 | Hypermetropia | Change in the direction of the ray of light due to change in medium | Spectrum of seven colours |
What are the important differences between looking at a photograph of your face and looking at yourself in a plane mirror?
State two effects caused by the refraction of light.
Light travelling from a denser medium to a rarer medium along a normal to the boundary:
(a) is refracted towards the normal
(b) is refracted away from the normal
(c) goes along the boundary
(d) is not refracted
A vertical ray of light strikes the horizontal surface of some water:
What is the angle of refraction?
When a ray of light travels from air to glass, it bends .......... the normal.
Choose and write the correct option.
If we gradually increase the angle of incidence of a ray of light passing through prism then …..
The size of image of an object by a convex lens of focal length 20 cm is observed to be reduced to `1/3` rd of its size . Find the distance of the object from the optical centre of the lens .
A star appears twinkling into the sky because of the reflection of light by the atmosphere.
A ray of light starting from diamond is incident on the interface separating diamond and water. Draw a labelled ray diagram to show. the refraction of light in this case.
