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To demonstrate the phenomenon of interfe...

To demonstrate the phenomenon of interference, we require two sources which emit radiation ......

A

nearly the same frequency

B

the same frequency

C

different wavelength

D

the same frequency and having a definite phase relationship

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The correct Answer is:
D
To demonstrate the phenomenon of interference we reqruired coherent sources. i.e., sources with same frequency and a fixed phase relationship.
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ALLEN -WAVE OPTICS-Exercise 5 A (Previous Years Questions)
  1. To demonstrate the phenomenon of interference, we require two sources ...

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  2. The maximum number of possible interference maxima for slit-separation...

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  3. A Young's double slit experiment uses a monochromatic source. The shap...

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  4. In a Young's double slit experiment the intensity at a point where tha...

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  5. A micture of light, consisting of wavelength 600nm and an unknown wave...

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  6. An intially parallel cyclindrical beam travels in a medium of refracti...

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  7. An intially parallel cyclindrical beam travels in a medium of refracti...

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  8. An intially parallel cyclindrical beam travels in a medium of refracti...

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  9. At two point P and Q on screen in Young's double slit experiment, wave...

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  10. In Young's double slit experiment, the two slits act as coherent sourc...

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  11. Statement-1: When light reflects from the air-glass plate interface, t...

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  12. In Young's double slit experiment, one of the slit is wider than other...

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  13. Two coherent point sources S1 and S2 are separated by a small distance...

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  14. Two beams A and B, of plane polarized light with mutually perpendicula...

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  15. On a hot summer night, the refractive index of air is smallest near th...

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  16. In a Young's double slit experiment with light of wavelength lamda the...

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  17. In Young's double slit experiment, the distance between slits and the ...

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