21. |
The ratio of phase difference and path difference is _____
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Answer:
Option (b) |
22. |
The correct relation between time interval ∂ and phase difference δ is _____
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Answer:
Option (a) |
23. |
The resultant amplitude in interference with two coherent sources depends upon _____
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Answer:
Option (c) |
24. |
The necessary condition for stationary interference pattern of light is that light source should be _____
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Answer:
Option (a) |
25. |
In the phenomenon of interference, energy is _____
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Answer:
Option (d) |
26. |
The equation for two waves obtained by two light sources are given below:
What will be the value of the phase difference at time t ?
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Answer:
Option (b) |
27. |
In a Young's double slit experiment, if the slits are of unequal width _____
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Answer:
Option (b) |
28. |
In Young's double slit experiment with monochromatic light the central fringe will be _____.
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Answer:
Option (c) |
29. |
Green light of wavelength 5100 Å from a narrow slit is incident on a double slit. If the overall separation of 10 fringes on a screen 200 cm away is 2 cm, then distance between the slits is _____
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Answer:
Option (b) |
30. |
The angular spread of central maximum in a diffraction pattern, does not depend on _____.
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Answer:
Option (a) |