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Which of the following statement is true...

Which of the following statement is true ?

A

Velocity of light is constant in all media

B

Velocity of light in vacuum is maximum

C

Velocity of light is not same in all reference frames

D

Velocity of light in denser medium is greater than that in rarer medium

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The correct Answer is:
B
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AAKASH SERIES-ELECTROMAGNETIC WAVES-EXERCISE -IA
  1. Electromagnetic waves are transverse in nature. It is evident by

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  2. Select wrong statement from the following - Electromagnetic waves

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  3. Which of the following statement is true ?

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  4. An electromagnetic wave passing through vacuum is described by the equ...

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  5. Which of the following rays has minimum frequency?

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  6. Which of the following rays are not electromag­netic wave ?

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  7. Which one of the following electromagnetic radiations have the smalles...

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  8. Which of the following waves have the maximum wave length ?

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  9. If mu(E ) and u(B) be the time average of the electric and magnetic fi...

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  10. An electromagnetic radiation has an energy 14.4keV. To which region of...

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  11. The frequency of X - rays, gamma - rays and Ultra­violet rays are resp...

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  12. A lamp radiates power Po uniformly in all directions, the amplitude of...

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  13. When a low flying air craft passes over head we some times notice a sl...

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  14. If the earth had no atmosphere, the average surface temperature would ...

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  15. Ozone layer absorbs these radiations of sun

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  16. Ozone layer blocks the radiations of wave length

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  17. Ozone layer absorbs all such radiation whose wavelengths are

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

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

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

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