Advertisements
Advertisements
Question
Calculate the frequency of a wave whose time-period is 0.02 s.
Advertisements
Solution
We have to find the frequency of oscillation.
Given: Time period T = 0.02 s
We know the relation between frequency and time period `f = 1/T` .
where f is the frequency and T the time period.
So,
`f = 1/0.02` Hz
= 50 Hz
APPEARS IN
RELATED QUESTIONS
Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.
A sound wave travels at a speed of 339 m s−1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?
A boy fires a gun and another boy at a distance of 1020 m hears the sound of firing the gun 3 s after seeing its smoke. Find the speed of sound.
If you want to hear a train approaching from far away, why is it more convenient to put the ear to the track?
Which of the following travels slowest in air and which one fastest? Supersonic aircraft, Light, Sound
Which term is used to denote a speed greater than the speed of sound?
What is the time-period of a tuning fork whose frequency is 200 Hz?
Helium gas is filled in two identical bottles A and B. The mass of the gas in the two bottles is 10 gm and 40 gm respectively. If the speed of sound is the same in both bottles, what conclusions will you draw?
Air temperature in the Rajasthan desert can reach 46°C. What is the velocity of sound in air at that temperature? (V0= 331 ms–1)
The speed of sound in a gaseous medium depends on the nature of the gas.
