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प्रश्न
Give one use of gamma rays.
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उत्तर
Gamma rays are used in medical science to kill cancer cells.
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संबंधित प्रश्न
Name the electromagnetic radiations used for (a) water purification, and (b) eye surgery.
Which radiation is used for satellite communication?
What is the range of the wavelength of the following electromagnetic waves?
(a) Micro waves .
X-ray and visible light travel at the same speed in vacuum. Do they travel at the same speed in glass?
Find the maximum potential difference which may be applied across an X-ray tube with tungsten target without emitting any characteristic K or L X-ray. The energy levels of the tungsten atom with an electron knocked out are as follows.
| Cell containing vacancy | K | L | M |
| Energy in keV | 69.5 | 11.3 | 2.3 |
Write the range of the wavelength of the following electromagnetic radiations:
(a) Infrared rays
(b) Ultraviolet rays
(c) γ -rays
Write one use of each of the above.
Which of the following is a tool used for separating the different color wavelengths from each other?
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Electromagnetic waves of wavelengths λ1, λ2 and λ3 are used in a radar system, in water purifiers and in remote switches of TV, respectively.
- Identify the electromagnetic waves.
- Write one source for each of them.
Identify the electromagnetic radiation and write its wavelength range, which is used to kill germs in water purified. Name the two sources of these radiations.
