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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.
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संबंधित प्रश्न
What is lateral inversion? Explain by giving a suitable example.
What type of reflection of light takes place from a cinema screen?
The image in a plane mirror is virtual and laterally inverted. What does this statement mean?
The angle of reflection is equal to the angle of incidence:
(a) always
(b) sometimes
(c) under special conditions
(d) never
State two effects caused by the refraction of light.
What is meant by 'refraction of light'? Draw a labelled ray diagram to show the refraction of light.
With the help of a diagram, show how when light falls obliquely on the side of a rectangular glass slab, the emergent ray is parallel to the incident ray.
Water is optically denser than glass.
Air is optically .......... than glass.
What do you understand by refraction of light?
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.
Choose and write the correct option.
If we gradually increase the angle of incidence of a ray of light passing through prism then …..
Lights of different colours are used as signal for safety transport. From these, the wavelength of red light is _______ nm.
Explain with diagrams how refraction of incident light takes place from
- rarer to denser medium
- denser to rarer medium
- normal to the surface separating the two media.
The deviation of light ray from its path when it travels from one transparent medium to another transparent medium is called ______.
The phenomenon of light passing through the object is called ______.
A star appears twinkling into the sky because of the reflection of light by the atmosphere.
Twinkling of stars and Mirage are the two phenomena occurring due to refraction.
Assertion: The air bubble shines in water.
Reason: Air bubble shines due to the refraction of light.
