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In a two slit experiment with monochroma...

In a two slit experiment with monochromatic light fringes are obtained on a screen placed at some distance from the sits. If the screen is moved by m `5 xx 10^(-2)m` towards the slits, the change in fringe width is m `3 xx 10^(-5)m` . If separation between the slits is `10^(-3)m` , the wavelength of light used is

A

`6000 Å`

B

`5000 Å`

C

`3000 Å`

D

`4500 Å`

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The correct Answer is:
A
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Knowledge Check

  • In a two slit experiment with monochromatic light, fringes are obtained on a screen placed at some distance from the slits . If the screen is moved by 5xx10^-2m , towards the slits, the change in fringe width is 3 xx 10^-5 m. If separation between the slits is 10^-3 m, the wavelength of light used is

    A
    6000Å
    B
    5000Å
    C
    3000Å
    D
    4500Å

  • In a two slit experiment with monochromatic light fringes are obtained on a screen placed at some distance from the sits. If the screen is moved by 5xx10^-2m towards the slits the change in fringe width is 3xx10^-5m . If separation between the slits is 10^-3m , the wavelength of light used

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    (a) `6000Å`
    B
    (b) `5000Å`
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    (c) `3000Å`
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  • In a double slit experiment, with monochromatic light, finges are obtained on a screen placed at some distance from the slits. If the screen is moed by 4xx10^(-2) m towards the slits, the changes in fringe width is 2xx10^(-5) m. If the separation between the slits is 10^(-3) m then wavelength of light used is

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    B
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