Question

The frequency of a tuning fork is 220 Hz and the velocity of sound in air is 330 m/s. When the tuning fork completes 80 vibrations, the distance travelled by the ______.

Options

• 120 m

• 60 m

• 53 m

• 100 m

Answer 1

The frequency of a tuning fork is 220 Hz and the velocity of sound in air is 330 m/s. When the tuning fork completes 80 vibrations, the distance travelled by the 120 m.

Explanation:

f= 220 Hz, v = 330 m/s

v = fλ

`lambda="v"/"f"=330/220=3/2m`

Distance travel by 80 vibrations is

`80xx3/2=120  "m"`