The linear superposition of an infinite number of complex monochromatic waves re
ID: 2304508 • Letter: T
Question
The linear superposition of an infinite number of complex monochromatic waves results in
an infinite number of wave packets.
a large but finite number of wave packets.
a single, localized wave packet whose outer envelope travels with the phase velocity.
a single, localized wave packet whose outer envelope travels with the group velocity.
a spatially infinite plane wave.
a.an infinite number of wave packets.
b.a large but finite number of wave packets.
c.a single, localized wave packet whose outer envelope travels with the phase velocity.
d.a single, localized wave packet whose outer envelope travels with the group velocity.
e.a spatially infinite plane wave.
Explanation / Answer
Option d is correct because when we superpose infinite number of waves with single wavelength, we get a wave packet which is localized and travels at the group velocity.
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