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In Young’s double-slit experiment, an interference pattern is obtained on a screen by a light of wavelength , coming from the coherent sources  and . At certain point  on the screen third dark fringe is formed. Then the path difference  in microns is

a)

0.75

b)

1.5

c)

3.0

d)

4.5


Question ID - 150096 | SaraNextGen Answer

In Young’s double-slit experiment, an interference pattern is obtained on a screen by a light of wavelength , coming from the coherent sources  and . At certain point  on the screen third dark fringe is formed. Then the path difference  in microns is

a)

0.75

b)

1.5

c)

3.0

d)

4.5

1 Answer - 5876 Votes

3537

Answer Key : (b) -

(b)

For dark fringe at

Here  and

So,



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