20 waves pass through a point in a medium in 5 seconds. What is the time required to pass one wave?
Correct answer: A. 1/4 sec
- A. 1/4 sec
- B. 4 sec
- C. 1/2 sec
- D. 2 sec
Explanation
A. 20/5 gives the frequency (waves per second) and the inverse of this gives the time period for each wave, which is ¼ seconds. f = no. of waves/ second = 20/5 = 4 Hzt = 1/fThus, t = ¼ s
Last updated
Related questions
Read the statement carefully and choose the correct option.
What is the relationship between the intensity 'I' and the amplitude 'a' of a wave?
Of the following properties of a wave, the one that is independent of the others is its:
A sound wave of frequency 400 Hz is travelling in a gas at a speed of 320 ms-1. What is the phase difference between two points 0.2 m apart in the direction of the travel?
The intensity of a wave is: