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प्रश्न
Name the phenomenon due to which a swimming pool appears less deep than it really is.
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उत्तर
This is due to the refraction of light.
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 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.
With the help of a labelled diagram, explain why a tank full of water appears less deep than it actually is.
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.
A ray of light when passes from glass to air, bends towards the normal.
Why does a ray of light bend when it travels from one medium to another?
The refractive index of a transparent medium is always greater than ______.
What is refractive index?
Under what circumstances there won’t be any refraction of light when it enters from one medium to another?
