JEE Main · PhysicsHard
In a Michelson interferometer, the mirror moves by $\Delta x = 0.05 \text{ mm}$. With $\lambda = 500 \text{ nm}$, find the number of fringes $N$ that shift.
- A.100
- B.200
- C.50
- D.400
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Correct answer: B — 200
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