Question

please help in this answer ​

Answer 1

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1. a) O is the mean position

b) A and B are Extreme position

2. a) The maximum displacement of a wave on either side of its mean position is called amplitude.

b) The motion of pendulum starting from one extreme end to another extreme end and back to the first extreme end is called one oscillation.

c) Number of oscillations made by a wave in one second is known as frequency.