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31 October, 07:38

Coherent microwaves of wavelength 5.00 cm enter a tall, narrow window in a building otherwise essentially opaque to the microwaves. if the window is 36.0 cm wide, what is the distance from the central maximum to the first-order minimum along a wall 6.50 m from the window?

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  1. 31 October, 11:11
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    The solution for this problem is:

    For 1st minimum, let m be equal to 1.

    d = slit width

    D = screen distance.

    Θ = arcsin (m * lambda / (d))

    = 0.13934 rad, 7.9836 deg

    y = D*tan (Θ)

    y = 6.50 * tan (7.9836)

    = 0.91161 m is the distance from the central maximum to the first-order minimum
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