In two separate set-ups of the Young’s double slit experiment, fringes of equal width are observed when lights of wavelengths in the ratio 1:2 are used. If the ratio of the slit separation in the two cases is 2 : 1, the ratio of the distances between the plane of the slits and the screen in the two set-ups is |
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a) |
4 : 1 |
b) |
1 : 1 |
c) |
1 : 4 |
d) |
2 : 1 |

In two separate set-ups of the Young’s double slit experiment, fringes of equal width are observed when lights of wavelengths in the ratio 1:2 are used. If the ratio of the slit separation in the two cases is 2 : 1, the ratio of the distances between the plane of the slits and the screen in the two set-ups is |
|||||||

a) |
4 : 1 |
b) |
1 : 1 |
c) |
1 : 4 |
d) |
2 : 1 |

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