Advertisements
Advertisements
Question
A source of wave produces 40 crests and 40 troughs in 0.4 s. What is the frequency of the wave?
Advertisements
Solution
Frequency of wave = number of waves per second
Or, ν = 40 / 0.4 = 100 Hz
APPEARS IN
RELATED QUESTIONS
What do you mean by a vibratory motion?
Which wave property determines loudness?
Give two examples each of longitudinal waves and transverse waves.
An observer A fires a gun and another observer B at a distance 1650 m away from A hears its sound. If the speed of sound is 330 m s-1, find the time when B will hear the sound after firing by A.
The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the time period.
What is the ratio of speed of light to speed of sound?
A sound wave travels 2000 m in 8 s. What is the velocity of the sound?
Name three animals, which can hear ultrasonic vibrations.
Draw a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Mark the position of compression and rarefaction on this curve. Also, define wavelengths and time periods using this curve.
Vibrations in a body produce ______.
