Evgenij

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Answer:

0.1

Frequency equals the number of waves that passes a given point per second or the number of oscillations of a vibrating body per second or number of cycles per second.

In this case, A pendulum has a frequency 40 in 4 seconds. Therefore, the frequency of the pendulum in one second is given as f=

timetaken

Noofcycles

=

4

40

=10Hz.

Time period of the wave is defined as the reciprocal of the frequency of the wave.

That is, T=

f

1

=

10

1

=0.1second.

Hence, the frequency and time period of the pendulum are 10 Hz and 0.1 second respectively.

83

Shali

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