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Consider the following statement regardi...

Consider the following statement regarding a beam of LASER.
(I) It is highly monochromatic.
(II) It is an electromagnetic radiation from a source.
(III) It travels with the speed of light.
Which of the statements given above are correct?

A

Both I and II

B

Both II and III

C

Both I and III

D

I, II and III

Text Solution

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The correct Answer is:
D
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DC PANDEY-ELECTROMAGNETIC WAVES-Sec A
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  2. In a plane electromagnetic wave, the electric field oscillates sinusoi...

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  3. Consider the following statement regarding a beam of LASER. (I) It i...

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  4. The velocity of electromagnetic radiatior in a medium of permittivity ...

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  5. The speed of electromagnetic wave in vacuum depends upon the source of...

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  6. The velocity of electromagnetic waves in free space can be given by re...

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  7. Which one of the following is the property of a monochromatic, plane e...

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  8. The essential distinction between X - rays and gamma - rays is that

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  9. An EM wave radiates out wards from a dipole antenna with E(0) as the a...

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  10. The sum delilvers 10^(4) W//m^(2) of electromagnetic flux to earth's s...

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  11. If E and B represent electric and magnetic field vectors of the electr...

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

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  13. Which is the correct expression of velocity of light?

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  14. Which of the following statement is false for the properties of electr...

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  15. The average electric field of electromagnetic waves in certain region ...

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  16. The electric and the magnetic field, associated with a electromagnetic...

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  17. The magnetic field amplitude of an electromagnetic wave is 2 xx 10^(-7...

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  18. A parallel plate capacitor is charged to 60 muC. Due to a radioactive ...

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