## Question

A light pointer fixed to one prong of a tuning fork touches a vertical plane. The fork is set vibrating and the plate is allowed to fall freely. 8 complete oscillations are counted when the plate falls through 10 cm. What is the frequency of the tuning fork?

### Solution

56 Hz

Time taken by plate to fall 10 cm freely under gravity

And as in this time, i.e., (1/7)*s* 8 oscillations are recorded on the plate, the number of oscillations per sec., i.e., frequency of the tuning fork will be .

#### SIMILAR QUESTIONS

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