Advertisements
Advertisements
प्रश्न
The heart of a man beats 75 times a minute. What is its (a) frequency and (b) time period?
Advertisements
उत्तर
Given, heart beats 75 times a minute
(a) Frequency = No. of times heart beats in 1 s
Or, = 75/60 = 1.25 s-1
(b) Time period, T = 1/
Or, T = 1 / 1.25 = 0.8 s
APPEARS IN
संबंधित प्रश्न
The frequency of a source of sound is 100 Hz. How many times does it vibrate in a minute?
You recognize your friend by hearing his voice on a telephone. Explain.
Explain the terms 'crests' and troughs' of a wave? What type of waves consist of crests and troughs?
Define sound ranging.
Sound is generated by the rhythmic ______ of an object.
Describe briefly an experiment to prove that vibrating bodies produce sound.
The distance between three consecutive crests of wave is 60 cm. If the waves are produced at the rate of 180/ min, calculate:
- wavelength
- time period
- wave velocity.
What do you mean by an echo?
Sound cannot travel through ______.
