Question

The maximum number of possible interference maxima for slit-separation eual to twice the wavelenght in young's double-slit experiment,is A)infinite B)five C)three D)zero
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Answer 1

The maximum number of possible interference maxima for slit-separation eual to twice the wavelenght in young's double-slit experiment,is A)infinite

B)five

C)three

D)zero

answer - a

Answer 2

Explanation:

For maxima, dsinθ=nλ

⇒2λsinθ=nλ

2sinθ=n

∴sinθ=

2

n

∵sinθ≤1

⇒

2

n

≤1

n≤2

n

max

=2

n=0,1,2,

So maximum number of possible maxima=5

n=0,±1,±2

October 15, 2019