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For the sustained interference of light,...

For the sustained interference of light, the necessary condition is that the two sources should

A

Have constant phase difference

B

Be narrow

C

Be close to each other

D

Of same amplitude

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A
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State two conditions to obtain sustained interference of light. In young's double slit experiment, using light of wavelength 400 nm, interference fringes of width X are obtained. The wavelength of light is increased to 600 nm and the separation between the slits is halved. if one wants the observed fringe width on the screen to be the same in the two cases, find the ratio of the distance between the screen and the plane of the slits in the two arrangements.

AAKASH INSTITUTE ENGLISH-WAVE OPTICS-Assignment (Section-A (objective type question(one option is correct)))
  1. In a single slit diffraction pattem

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  2. Diffraction and interference of light refers to -

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  3. A polariser in used to

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  4. Light waves can be polarides as they are

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  5. Through which character, we can distinguish the light waves form sound...

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  6. The angle of polarisation for any medium is 60^(@) , what will be crit...

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  7. Which of the following cannot be polarised?

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  8. An unpolarised light of intensity Io is passed through a polaroid. The...

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  9. Refractive index of material is equal to tangent of polarising angle. ...

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  10. Two nicols are oriented with then principal planes making an anlge of ...

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  11. In the case of linearly polarized light, the magnitude of he electric ...

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  12. When the angle of incidence on a material is 60^(@), the reflected lig...

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  13. For the sustained interference of light, the necessary condition is th...

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  14. Which of the following is conserved when light waves interfere ?

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  15. Huygen wave theory allows us to know:

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  16. If one of the slits in Young's double slit experiment is fully closed,...

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  17. In young's experiment, the separation between 5th maxima and 3rd minim...

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  18. Choose the correct statement

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  19. The distance upto which ray optics holds good is called

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  20. Diffraction effect can be observed in

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