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Which of the following are not electroma...

Which of the following are not electromagnetic waves?
(i) `alpha`-rays
(ii) Radio waves
(iii) `beta`-rays
(iv) Sound waves
(v) Micro waves
(vi) Cosmic rays

A

X-rays

B

`gamma` rays

C

`beta` rays

D

heat rays

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-ELECTROMAGNETIC WAVES-EXERCISE -IA
  1. An electromagnetic wave going through vacuum is described by E= E0 s...

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  2. Which of the following rays has minimum frequency?

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  3. Which of the following are not electromagnetic waves? (i) alpha-rays...

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  4. Which of the following electromagnetic waves has smallest wavelength?

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  5. Which of the following waves has the longest wavelength?

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  6. If u(E ) and u(B) be the time average of the electric and magnetic fie...

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  7. An electromagnetic radiation has an energy 14.4eV. To which region of ...

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  8. The frequency of gamma-rays, X-rays and ultraviolet rays are a,b,c and...

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  9. Assume that a lamp radiates power P uniformly in all directions. The m...

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  10. When a low flying aeroplane passes over head, we sometimes notice a sl...

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  11. A : If the earth did not have an atmosphere, its average surface temp...

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  12. Ozone layer protestes the living cells from

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  13. Ozone layer blocks the radiations of wave length: (1.) less than 3 × ...

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  14. Practically ozone layer absorbs the radiation of wavelength

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  15. A radiation of energy E falls normally on a perfectly reflecting surfa...

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  16. The type of electromagnetic wave propagation which is effected as a re...

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  17. X-rays are known as to be electromagnetic radi­ation. Therefore the X-...

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  18. The altitude of the ozone layer in the atmosphere and the ‘type’ of th...

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  19. Four atmospheric layers are given below, namely (i) stratosphere (ii) ...

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  20. Infrared radiations are detected by

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