At a particular temperature the speed of sound is 330 m/s and its frequency is 990 Hz. Choose the correct period of the wave in fractional form.

Question

asked Jun 13, 2017 105k views

2 Answers

Kitt · Answer 1 · 2017-06-20T05:56:35+0000

The correct answer of the question is : 0.001 s.

CALCULATION:

As per the question, the speed of sound v = 330 m/s

The frequency of the sound f = 990 Hz.

Let the wavelength of the wave is
$\lambda$ .

The wavelength of the wave is calculated as-

wavelength
$\lambda=(speed)/(frequency)$

=
$(330)/(990)\ m$

= 0.33 m.

Now we are asked to calculate the time period.

The time period of the wave is reciprocal of frequency.

Mathematically time period T =

=
$(1)/(990)\ s$

= 0.001 s.

As per the question, we need the period.

Hence, the period of the wave is 0.001 s.