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प्रश्न
Fill in the following blank with suitable word:
Light bends when is passes from water into air. We say that it is ............
उत्तर
Light bends when is passes from water into air. We say that it is refracted.
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संबंधित प्रश्न
Name the phenomenon due to which a swimming pool appears less deep than it really is.
What is meant by the 'angle of incidence' and the 'angle of refraction' for a ray of light?
A ray of light passes from a medium X to another medium Y. No refraction of light occurs if the ray of light hits the boundary of medium Y at an angle of:
(a) 0°
(b) 45°
(c) 90°
(d) 120°
A light ray suffers reflection and refraction at the boundary in passing from air to water. Draw a neat labelled ray diagram to show it.
Define the principal focus of a concave mirror.
Observe the given figure and name the following.
| Ray AB | |
| Ray NM | |
| Ray MD | |
| ∠ r |
State whether true or false. If false, correct the statement.
The angle of deviation depends on the refractive index of the glass.
A pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water. Will the pencil appear to be bent to the same extent, if instead of water we use liquids like, kerosene or turpentine. Support your answer with reason.
A star appears twinkling into the sky because of the reflection of light by the atmosphere.
Assertion: The air bubble shines in water.
Reason: Air bubble shines due to the refraction of light.
