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Question

The two slits are 1 mm apart from each other and illuminated with a light of wavelength 5×107 m. If the distance of the screen is 1m from the slits, then the distance between third dark fringe and fifth bright fringe is.

A
1.2 mm
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B
0.75 mm
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C
1.25 mm
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D
1.625 mm
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Solution

The correct option is B 0.75 mm
The correct answer is option b.
1861790_1355333_ans_07a942451bff4e819f6826f3315c9a21.JPG

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