JEE Main 2022 · 28 Jul · Shift 1 · Physics Q53

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PhysicsInteger+4 / -1Question 53 of 90

In a Young's double slit experiment, a laser light of 560 nm produces an interference pattern with consecutive bright fringes' separation of 7.2 mm. Now another light is used to produce an interference pattern with consecutive bright fringes' separation of 8.1 mm. The wavelength of second light is ______ nm.

Your answer

Answer and worked solution

Official answer: 630

$\beta\propto\lambda$ : $560\times\frac{8.1}{7.2}=630$ nm.

Answer: 630

Topics:Interference and Young's double slit

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JEE Main 2022 · 28 Jul · Shift 1, Physics question 53