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प्रश्न
State the approximate range of wavelength associated with visible light.
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उत्तर
Visible light wavelength range 4000 Å to 8000 Å.
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संबंधित प्रश्न
How are infrared waves produced?
What is the range of the wavelength of the following electromagnetic waves?
(a) Gamma rays.
Give the range of wavelength of the electromagnetic waves visible to us.
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When a Coolidge tube is operated for some time it becomes hot. Where does the heat come from?
One of the following wavelengths is absent and the rest are present in the X-rays coming from a Coolidge tube. Which one is the absent wavelength?
Mark the correct options.
(a) An atom with a vacancy has smaller energy that a neutral atom.
(b) K X-ray is emitted when a hole makes a jump from the K shell to some other shell.
(c) The wavelength of K X-ray is smaller than the wavelength of L X-ray of the same material.
(d) The wavelength of Kα X-ray is smaller than the wavelength of Kβ X-ray of the same material.
The frequency of x-rays, y-rays and ultraviolet rays are respectively a, b and c. Then:-
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Assertion (A): Ultraviolet radiations is scattered more as compared to the microwave radiations.
Reason (R): Wavelength of ultraviolet radiation is more than the wavelength of microwave radiation.
