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प्रश्न
Comment on the statement ‘The refractive index of glass is 3/2.’
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उत्तर
It means that the speed of light in glass is 2/3rd the speed of light in the air (or vacuum).
संबंधित प्रश्न
Which of the above wavelengths has a higher frequency?
Observe the following figure and answer the questions given under it:
1) How many times does refraction take place in the above figure?
2) What happens to the ray of light when it passes from air to glass?
3) What happens to the ray of light when it passes from glass to air?
4) What are the rays AB and CD in the figure called?
5) Define refraction.
When a ray of light from air enters a denser medium, it ______.
A coin is places at the bottom of a beaker containing water (refractive index = 4/3) to a depth of 12 cm. By what height the coin appears to be raised when seen from vertically above?
The critical angle for glass-air is 45° for the light of yellow colour. State whether it will be less than, equal to, or more than 45° for (i) ref light, (ii) blue light?
A total reflecting equilateral prism can be used to deviate a ray of light through:
Explain with the help of a diagram of how fish is able to see the objects above it.
The speed of light in air is 3 × 108 ms-1. Calculate the speed of light in water. The refractive index of water is 4/3.
