Question

i) Which of the following path difference between light from two coherent sources will lead to destructive interference in a Young's double slit experiment? ​

Answer 1

It is the case of destructive interference where a dark fringe is formed. So,

λ=6000

A

˙

n=3

S

1

P−S

2

P=

2

(2n−1)λ

S

1

P−S

2

P=

2

(2×3−1)6000

=

2

5×6000

=15000

A

˙

=1.5microns

Answer 2

Answer:

Option B

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Explanation:

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