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In the following list of different elect...

In the following list of different electromagnetic waves and its source, which one is not correct ?

A

Gamma rays `to` decay of a radioactive nucleus

B

Ultraviolet rays `to` magnetron valve

C

Infrared rays `to` oscillations of atoms and molecules

D

X - rays `to` coolidged tube

Text Solution

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The correct Answer is:
B
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KUMAR PRAKASHAN-ELECTROMAGNETIC WAVES-SECTION D MULTIPLE CHOICE QUESTIONS (MCQs)
  1. Which of following statements are correct ? (1) Wavelength of micr...

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  2. Which of following are not electromagnetic waves ?

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  3. In the following list of different electromagnetic waves and its sourc...

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  4. Crystalline structures can be studied using …. .

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  5. In vacuum, X - rays, Gamma rays and Microwave have …. .

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  6. For navigation in sea, …. waves are useful.

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  7. …. radiation is emitted by hot bodies.

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  8. In microwave oven, if frequency of rotation of water molecules is v(1)...

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  9. Given the frequency of microwave used by microwave oven to cook food.

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  10. ….. are used in the interceptor van used by traffic police.

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  11. ….. can be used to cook the food.

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  12. …. Lamp is used in physiotherapy treatement.

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  13. When skin gets exposed UV radiation for a long time, it develops …..

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  14. Which of following is CFC gas ?

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  15. Cracks in bones can be detected using ………

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  16. ….. are used to kill cancerous cells.

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  17. In communication system and RADAR microwave are used, because …….

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  18. Ozone layer absorbs …..

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  19. The wavelength less than …… Å almost all the electromagnetic waves are...

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  20. Wavelengths of some electromagnetic waves are given below. Arrange the...

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