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Which of the following electromagnetic w...

Which of the following electromagnetic waves has minimum frequency ?

A

radio wave

B

ultrasonic wave

C

microwave

D

audible wave

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The correct Answer is:
A
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MOTION-ELECTRO MAGNETIC WAVES -EXERCISE - 1
  1. An electromagnetic wave is propagating along Y-axis. Then

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  2. In electromagnetic wave, the phase difference between electric and mag...

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  3. An electromagnetic wave going through vacuum is described by E= E0 s...

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  4. In a place e.m wave, the electric field oscillates sinusoidally at a f...

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  5. If epsi(0) and mu(0) are respectively, the electric permittivity and t...

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  6. An electromagnetic wave going through vacuum is described by E= E0 s...

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  7. Using B=(mu0) H find the ration (E0/H0) for a plane electromagnetic wa...

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  8. A electromagnetic wave going through a medium is given by E = E(0)sin...

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  9. A plane electromagnetic wave of frequency 50 MHz travels in free space...

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  10. Total energy of density of electromagnetic waves in vacuum is given by...

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  11. The average value of electric energy density in an electromagnetic wav...

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  12. A lamp radiates power P(0) uniformly in all directions, the amplitude ...

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  13. In an electromagnetic wave, the amplitude of electric firld is 1 V/m. ...

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  14. The sun delivers 10^3W//m^2 of electromagnetic flux to the earth's sur...

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  15. About 5% of the power of a 100 W light bulb is converted to visible ra...

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  16. In an electromagnetic wave, the electric and magnetizing field are 100...

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  17. Infrared spectrum lies between

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  18. Consider an electric charge oscillating with a frequency of 10 MHz. Th...

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  19. The most penetrating radiation out of the following is

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  20. Which of the following electromagnetic waves has minimum frequency ?

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