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Define diffraction....

Define diffraction.

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KUMAR PRAKASHAN-WAVE OPTICS-SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)
  1. Define diffraction.

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  2. According to particle theory of light what is the velocity of light in...

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  3. Light moves in a straight line. Because ......

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  4. ...... gave the concept of wave theory of propagation of light

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  5. In the wave propagation phenomenon, phase difference of oscillation of...

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  6. The line perpendicular to wavefront and which represents propagation o...

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  7. The most important point of Huygen's wave theory is that ......

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  8. Light moves in a straight line. Because ......

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  9. The shape of wave front at large distance is approximately ........

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  10. Limitations of Huygen's principle is explained by.....

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  11. Intensity of secondary waves is directly proportional to ......

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  12. Huygen's principle cannot explain .....

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  13. What is the phase difference between consecutive crest and through ?

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  14. Velocity of light in rarer medium is v(1) it passes through denser med...

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  15. Light of wavelength 5000 Å incidents on reflecting surface, then for ....

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  16. No. of waves of a certain colour light are 2000 in 1 mm distance in ai...

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  17. A rocket goes away from Earth at speed of 6 xx 10^(7) m//s and it has ...

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  18. The wavelength of wave of 5000 Å comir from a star at far distance is ...

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  19. Frequency of light changes when source move away from stationary obser...

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  20. The star recedes from the earth at the speed a 100 kms^(-1) Find the d...

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  21. In doppler effect of light, term red shift represents ......

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