In a standard double-slit interference experiment

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

In a standard double-slit interference experiment, which relationship correctly expresses the condition for the m-th bright fringe at angle θ\theta? (a) dcos⁡θ=mλd\cos\theta = m\lambda (b) dsin⁡θ=λmd\sin\theta = \dfrac{\lambda}{m} (c) dsin⁡θ=(m+12)λd\sin\theta = \left(m+\tfrac12\right)\lambda (d) dsin⁡θ=mλd\sin\theta = m\lambda

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