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If the first minima in Young's double-sl...

If the first minima in Young's double-slit experiment occurs directly in front of one of the slits (distance between slit and screen `D = 12 cm` and distance between slits `d = 5 cm)`, then the wavelength of the radiation used can be

A

2 cm only

B

4 cm only

C

`2 cm, (2)/(3)cm, (2)/(5) cm`

D

`4cm, (4)/(3) cm, (4)/(5) cm `

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • In Young's double slit experiment, the distance between the slits is 1 mm and that between slit and screen is 1 meter and 10th fringe is 5 mm away from the central bright fringe, then wavelength of light used will be

    A
    `5000 Å`
    B
    `6000 Å`
    C
    `7000 Å`
    D
    `8000 Å `

  • When the distance between the slit and screen in Young's experiment is doubled then

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    Fringe width becomes double
    B
    Fringe width becomes half
    C
    Fringe width remains unchanged
    D
    Fringe width becomes thrice

  • In Young's double-slit experiment the distance between the slits is 1 mm and that between slit and screen is 1m. If 10th bright fringe is 5 mm away from the central bright fringe, then wavelength of light used will be

    A
    5000 Å
    B
    6000 Å
    C
    4000 Å
    D
    8000 Å

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