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Wave in Negative X-Direction

In a wave mot...

Question

In a wave motion $y = a sin (k x - ω t), y$ can represent

A

electric field

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B

magnetic field

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C

displacement

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D

pressure

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Solution

The correct options are
A pressure
B displacement
C electric field
D magnetic field
$A, B$ Electric field and magnetic field in light. Light is a transverse wave.
$D$ Sound travels as pressure difference sound is a longitudinal wave.
$C$ $y = f (x, t)$ has $x$ and $t$ variable hence it represent displacement

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