The speed of sound in air at NTP is 300 ms-1. If the air pressure become 4 times; then the speed of the sound will be:
Correct answer: B. 300 s-1
- A. 150 s-1
- B. 300 s-1
- C. 600s-1
- D. None
Explanation
The speed of sound in air at NTP is a constant value i.e 300 ms-1 (it does not change) The speed of sound in a gas is independent of its pressure
Last updated
About Speed of Sound
The speed of sound depends on the properties of the medium, including its elasticity and density, and in gases it varies mainly with temperature. Questions connect speed with frequency and wavelength, compare sound in solids, liquids and gases, and distinguish the speed of propagation from the oscillating particles' motion.
Practise Waves
1,281 free Waves MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A bomb explodes on the moon. How long will it take for the sound to reach the earth:
A train is approaching a station at 90 km/h sounding a whistle of frequency 1000 Hz. What will be the apparent frequency heard by the listener sitting on the platform if the train moves away from the station at the same speed? (speed of sound= 340 m/s)
According to Newton sound travel in air under the conditions of_____________________?
An ambulance siren emits a sound of frequency 1800 Hz. The speed of sound in air is 330m/s. If the ambulance moves toward a stationary observer at a constant speed of 50m/s. What is the frequency heard by the observer?
An ambulance siren emits a sound of frequency 1800 Hz. The speed of sound in air is 330 m/s. The ambulance moves towards a stationary observer at a constant speed of 50 m/s. What is the frequency heard by the observer?