In a Young’s double-slit arrangement the number of bright fringes visible on the screen is

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

Problem

In a Young’s double-slit arrangement the number of bright fringes visible on the screen is NN. If all distances remain fixed but the wavelength of light is doubled, the new number of bright fringes visible will (a) 2N2N (b) N2\dfrac{N}{2} (c) NN (unchanged) (d) 4N4N

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