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प्रश्न
What is refractive index?
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उत्तर
The ratio of the speed of light in a vacuum to the speed of light in a medium is defined as the refractive index ‘µ’ of that medium.
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संबंधित प्रश्न
An extended object in the form of an arrow pointing upward has been placed in front of a plane mirror. Draw a labelled ray-diagram to show the formation of its image.
If a ray of light goes from a rarer medium to a denser medium, will it bend towards the normal or away from it?
If a ray of light goes form a denser medium to a rarer medium, will it bend towards the normal or away from the normal?
As light rays pass from water into glass, are they refracted towards the normal or away from the normal?
A vertical ray of light strikes the horizontal surface of some water:
What is the angle of incidence?
Air is optically .......... than glass.
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.
The laws of reflection hold true for ______.
The ratio of the sine of the angle of incidence to the sine of ______ is constant.
Under what circumstances there won’t be any refraction of light when it enters from one medium to another?
