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
List the measures that you will take when designing a sound-proof room.
Name the type of waves produced when a tuning fork is struck in air.
Explain the terms 'compressions' and 'rarefactions' of a wave. What type of waves consist of compressions and rarefactions.
At 20°C, the minimum distance of a person from a sound reflecting surface to hear an echo is :
What causes sound?
Draw a displacement-distance graph of a wave and mark on it, the amplitude of wave by the letter 'a' and wavelength of wave by the letter λ.
State the speed of (i) light and (ii) sound in air?
The smoke from the gun barrel is seen 2 second before the explosion is heard. If the speed of sound in air is 350 ms-1, calculate the distance of observer from the gun.
Number of vibrations produced in one second is ______.
Sound can travel through solids, gases, liquids, and even vacuum.
