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If two slightly, different wavelengths a...

If two slightly, different wavelengths are present in the light used in Young's double-slit experiment, then

A

the sharpness of fringes will more than the case when only one wavelength is prasent

B

the sharpness of fringes will decrease as we move away from the central fringe

C

the central fringe will be white

D

the central fringe will be dark

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • If white light is used in a Young's double-slit experiment, the

    A
    Bright white fringe is formed at the center of the screen
    B
    Fringes of different colors are observed clearly only in the first order
    C
    The first-order violet fringes are closer to the center of the screen than the first-order red fringes
    D
    The first-order red fringes are closer to the center of the screen than the first-order violet fringes

  • If white light is used in a Young's double slit experiment,

    A
    bright white fringe is formed at the centre of the screen
    B
    fringes of different colours are observed clearly only in the first order
    C
    the first -order violet fringes are closer to the centre of the screen than the first -order red fringes
    D
    the first -order red fringes are closer to the centre of the screen than the first -order violet fringes

  • What happens by the use of white light in Young's double slit experiment:

    A
    Bright fringe are obtained
    B
    Only bright and dark fringes are obtained
    C
    Central fringes is bright and two or three coloured and dark fringes are observed
    D
    none of the above

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