Question 32: Waves

Question

The displacement of a wave is given by
$y = 20\cos (\omega t + 4z)$
The amplitude of the given wave is

Accepted Answer

Given, $y = 20\cos (\omega t + 4z)$
On comparing if with general equation,
$y = A\cos (kx+\omega t)$
we get, $A=20$
Therefore, amplitude of the wave is 20.

Answer

$10$

Answer

$20$

Answer

$20\sqrt2$

Answer

$10\sqrt2$

Waves

The displacement of a wave is given by y = 20\cos (\omega t + 4z) The amplitude of the given wave is

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