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In communication system and RADAR microw...

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

A

its wavelength is very small.

B

its interference is very less.

C

its interference is more.

D

they propogates very fast.

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The correct Answer is:
B
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KUMAR PRAKASHAN-ELECTROMAGNETIC WAVES-SECTION D MULTIPLE CHOICE QUESTIONS (MCQs)
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  2. ….. can be used to cook the food.

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  3. …. Lamp is used in physiotherapy treatement.

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  5. Which of following is CFC gas ?

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

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

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

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  9. Ozone layer absorbs …..

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

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

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  12. Wavelength of infrared waves is …..

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  13. The wavelength 5890 Å and 5896 Å of sodium doublet correspond to …. re...

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  14. In electromagnetic spectrum ……… the light has lowest wavelength.

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  15. Which of the following electromagnetic wave has maximum wavelength ?

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  16. Which of the following group has the frequency of electromagnetic ray ...

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  17. Which of the following is not electromagnetic waves ?

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  19. Which type of rays are used for LASIK eye surgery ?

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  20. ……. frequency is use in TV.

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