1
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25
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Longitudinal waves cannot

A
have a unique wave length
B
have a unique wave velocity
C
transmit energy
D
be polarized
2
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
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The displacement of a plane progressive wave in a medium, travelling towards positive x-axis with velocity 4 m/s at t = 0 is given by $$y = 3\sin 2\pi \left( { - {x \over 3}} \right)$$. Then the expression for the displacement at a later time t = 4 sec will be

A
$$y = 3\sin 2\pi \left( { - {x-16 \over 3}} \right)$$
B
$$y = 3\sin 2\pi \left( { {-x-16 \over 3}} \right)$$
C
$$y = 3\sin 2\pi \left( { {-x+1 \over 3}} \right)$$
D
$$y = 3\sin 2\pi \left( { {-x-1 \over 3}} \right)$$
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