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Which of the following generates a plane...

Which of the following generates a plane wavefront?

A

`alpha-` rays

B

`beta-` rays

C

`gamma-` rays

D

none of these

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The correct Answer is:
D
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TARGET PUBLICATION-WAVE THEORY OF LIGHT -COMPETITIVE THINKING
  1. Light appears to travel in straight lines since

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  2. The rectilinear propagation of light in medium is due to its

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  3. Which of the following generates a plane wavefront?

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  4. Wavefront of a wave has direction with wave motion

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  5. According to Huygens' principle, during rafraction of light from air t...

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  6. Which one of the following phenomena is not explained by Huygens const...

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  7. In Huygen's wave theory, the locus of all points in the same state of ...

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  8. Wavefront is the locus of all points, where the particles of the mediu...

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  9. When a ray of light is incident normally on a surface, then

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  10. Rays diverging from a point source from a ………… wavefront.

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  11. For the same angle of incidence the angles fo refreaction in media ...

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  12. A ray of light is incident on the surface of seperation of a medium at...

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  13. A light is travelling from air a medium the velocity of light in a me...

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  14. A ray of light travelling through rarer medium is incident at very sma...

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  15. The refractive indices of water and galss w.r.t. air are 1.3 and 1.5 r...

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  16. A ray of light is icident on a glass plate of refractive index 1.5. Th...

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  17. A wave of light having frequency 4 xx 10^(14)Hz. And speed of light 3...

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  18. The change in wavelenght of light of frequency 4 xx 10 ^(14)Hz. When i...

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  19. The wavelenth of light is 5000 Å . Find the wave number.

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  20. If the wavelength of light is 4000 Å, then the number of waves in 1 mm...

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