Question

A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.Class 8.​

Answer 1

Explanation:

A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.

Frequency of oscillations is the number of oscillations of a vibrating object per second. Therefore frequency is = 40 vibrations /4 seconds= 10 Hertz.

Answer 2

$answer -$

• Frequency of oscillations is defined as the number of oscillations of a vibrating body per second. It is given by

$frequency = \frac{number \: of \: oscillations}{time} = \frac{40}{4} = 10hz$

• The time required to complete one oscillation is known as time period. It is given by the inverse of the frequency.

$Time \: period = \frac{1}{frequency \: of \: oscillations} = \frac{1}{10} =0.1s$

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• Know more-

✴ Time period is equal to the reciprocal of frequency.

Time Period= 1/frequency.

✴ Frequency is expressed in Hertz.