The phase angle between two points is 3 pi. The distance between these points is 15 cm. What is the wavelength of the wave?
Correct answer: D. 10 cm
- A. 30 cm
- B. 45 cm
- C. 5 cm
- D. 10 cm
Explanation
According to the formula of Phase Difference ΔΦ=Δx(2pi/λ) where, ΔΦ = phase difference ( phase angle between two points ) λ = wavelength of wave Δx = path difference ( distance between two points on wave ) So, 3pi=15(2pi/λ) λ =2pi x 15/3pi=10cm
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Progressive Waves
Progressive waves transfer energy through a medium or space while particles oscillate about their equilibrium positions. The work includes amplitude, wavelength, frequency, period, phase difference, wave speed and the progressive wave equation, while distinguishing travelling waves from stationary waves, where the pattern has fixed nodes and antinodes.
Practise Waves
1,281 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 Progressive Waves questions
The phase angle between two points in a medium is 4 pi/5. What is the separation between these two points if the wavelength of the wave is 5 m?
The phase angle between two points is 3 pi. The distance between these points is 15 cm. What is the wavelength of the wave?
Time period of the wave is 1/4 sec. How long does it take to pass 20 complete waves from a point?
A longitudinal wave is moving through a medium. Which of the following statements about the direction of propagation of wave and displacement of the medium is true?
In a periodic wave, the distance between the second and fifth crest is 15 cm. What is the wavelength of the wave?
The number of vibrations executed in one second are called: