Define the terms: (i) oscillation (ii) amplitude (iii) frequency, and (iv) time period as related to a simple pendulum


  1. Oscillation – One complete to and fro motion of the bob of pendulum is called one oscillation.
  2. Amplitude – The maximum displacement of the bob from its mean position on either side, is called the amplitude of oscillation. It is denoted by the letter a or A and is measured in metre(m).
  3. Frequency – The number of oscillations made in one second is called the frequency. It is denoted by f or n. Its unit is per second (s-1) or hertz (Hz).
  4. Time period – The time taken to complete one oscillation is the time period. It is denoted by the symbol T. Its unit is in second (s).

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