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Assertion (A) : No interfrence pattern i...

Assertion (A) : No interfrence pattern is detected when two coherent sources are very closer to each other. (i.e separation almost zero)
Reason (R ) : The fringe width is inversely proportional to the distance between the two slits

A

Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'

B

Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'

C

A' is true and 'R' is false

D

A' is false and 'R' is true

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Assertion : When a thin transparent sheet is placed in front of both the slits of Young's experiment, the fringe width will remains same. Reason : In Young's experiment, the fringe width is directly proportional to wavelength of the source used.

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  • Assertion (A) : For best contrast between maxima and minima in the interference patten of Young's double slit experiment the intensity of light emerging out of the two slits should be equal. Reasson (R ) : The intensity of interference pattern is proportional to the square of the amplitude.

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    B
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    D
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