If stretching force T of wire increases, then its frequency __________________?
Correct answer: B. increases
- A. decreases
- B. increases
- C. remains the same
- D. any of above
Explanation
For a stretched wire, the frequency is proportional to the square root of its tension, f = (1/2L)√(T/μ). Therefore, increasing the stretching force increases the frequency, assuming the length and mass per unit length remain fixed. The likely mistake is choosing decreases, which reverses the dependence on tension.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Stationary Waves
Stationary waves form when two waves of the same frequency and amplitude travel in opposite directions and interfere. The topic covers nodes, antinodes, wavelength, phase, resonance, and the allowed frequencies on strings and in air columns. Unlike progressive waves, stationary waves do not transfer energy from one point to another.
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 Stationary Waves questions
The first overtone of a stretched string of given length is 320 Hz. The first harmonic is_________?
The distance between any two consecutive nodes or antinodes in a stationary wavelength (λ) is _________?
The distance between two consecutive nodes in a stationary wave is
A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe _____________________?
In vibrating cord the points where the amplitude is maximum, are called ___________________?
In a stationary wave, the velocity of particles of a medium at the nodes