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Statement I: In YDSE, if separation bet...

Statement I: In YDSE, if separation between the slits is less than wavelength of light, then no interference pattern can be observed.
Statement II: For interference pattern to be observed, light sources have to be coherent.

A

Statement I is True, statement II is True, Statement II is a correct explanation for Statement I.

B

Statement I is Ture, Statement II is Ture, Statement II is NOT a correct explanation for Statement I.

C

Statement I is True, Statement II is False.

D

Statement I is False, Statement II is True.

Text Solution

Verified by Experts

The correct Answer is:
b
`Delta x = d sin theta implies Delta x_(max) lt d`
If `d lt lambda` then `Delta x_(max) lt lambda`. So, maxima can be present and Statement II is ture but not explaining statement I.
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Knowledge Check

  • To obtain steady or sustained interference pattern, two sources of light should be

    A
    away from each other.
    B
    coherent and monochromatic
    C
    emitting light waves of different wavelengths.
    D
    emitting light waves of different amplitudes.

  • In the interference pattern all the fringes are of equal emit light of

    A
    intensity
    B
    contrast
    C
    width
    D
    all of these

  • In YDSE setup when white light is used then which of the following statements are correct for the interference pattern obtained.

    A
    The fringe next to the central maxima will be Reddish white
    B
    Central maxima will be white in colour
    C
    The fringe next to the central maxima will be Bluish white
    D
    There will be no fringe which is perfectly dark

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