Answer true or false for each statement. For a transverse wave: a) The pulse\'s

Question

Answer true or false for each statement.
For a transverse wave:

a) The pulse's displacement is always to the north
b) The pulse's amplitude H steadily increases
c) The pulse's amplitude H decreases as it travels west, then it increases as it travels east.
d) As the pulse travels west, the displacement oscillates between north and south.
e) The pulse's displacement is always zero at point A.
f)The pulse's amplitude H steadily decreases.
g) The pulse's amplitude only decreases at the fixed points, A and B.
h) When traveling east, the pulse's displacement is always to the south.

Explanation / Answer

a) True Reason: For upward pulse, the displacement is always in upward direction. Hence, it is north. b) False Reason: Amplitude is the maximum displacement from the mean position on either sides and it is always constant. c) False Reason: Amplitude is the maximum displacement from the mean position on either sides and it is always constant. d) False Reason: The displacement is always upwards ( North ) for upward pulse e) True Reason: At rigid end, the particles are not free to move. Hence, the displacement and amplitude are equal to zero at this point. f) False Reason: Amplitude is the maximum displacement from the mean position on either sides and it is always constant. g) True Reason: At rigid end, the particles are not free to move. Hence, the displacement and amplitude are equal to zero at this point. h) True Reason: After reflecting from the rigid end, there is a phase difference of 180 degrees. Hence, the displacement is downward ( South ) for the downward pulse which is moving towards East

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