If the speed of sound in air is 340 m/sec. What is the wavelength of a 1-KHz sound wave?
Correct answer: C. 0.340m
- A. 3.40m
- B. 2.94m
- C. 0.340m
- D. 0.294m
Explanation
According to the v=fλ v= 340m/s f= 1 x 103 Hz Hence λ= v/f = 340 / 1x103= 0.34 m (option C is the correct option)
This question appeared on the ETEA MDCAT 2005 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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
1,289 free Waves MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Speed of Sound questions
In gases, the speed of sound is inversely proportional to _ of the density when other factors are the same.
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?
Which of the following frequency of sound waves is audible?
The wavelength of sound made from a tuning fork of frequency 330 Hz is nearly:
When the pressure in the medium increases, the speed of sound in that medium:
The ratio between the velocity of sound in air at 4 atm and that at 3. atm pressure would be: