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Questions  

If  a  slit illuminated by sodium light is placed  2 mm from the plane of a mirror,  what will be the distance in cm between the consecutive bands formed on a screen 1 m from th slit if the wavelength of sodium light is 5890A0 ?

a
0.01472
b
0.864
c
0.028
d
0.0063

detailed solution

Correct option is A

Image of the slit will be another virtual source.

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In a double slit experiment, the slits are separated by a distance d and the screen is at a distance D from the slits. If a maxima is formed just opposite to each slit, then what is the order of the fringe so formed?


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