Microwaves of frequency 24,000 MHz are incident normally on a rectangular slit of width 5 cm. Calculate the
angular spread of the central maximum of the diffraction pattern of the slit.
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Angular spread of the central maximum of the diffraction pattern of the slit = 2.5 * 10^-1 radians
Explanation:
c = 3 * 10^8 m/s
f = 24000 MHz = 24 * 10^9 Hz
a = 5 cm = 5 * 10^-2 m
λ = c/f = 3 * 10^8 / 24 * 10^9 = 1/ (8*10) = 0.0125
θ = λ/a
= 0.0125 / 5 * 10^-2
= 1.25 / 5
= 0.25
Angular spread θ = 0.25 = 2.5 * 10^-1 radians
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