Home
Class 11
PHYSICS
Two waves of frequencies 20 Hz and 30 Hz...

Two waves of frequencies 20 Hz and 30 Hz. Travels out from a common point. The phase difference between them after 0.6 sec is

A

Zero

B

`(pi)/(2)`

C

`pi`

D

`(3pi)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
Beat period = `(1)/(30-20)=0.1` sec
`Deltaphi=(2pi)/(T)xxDeltat=(2pi)/(0.1)xx0.6`
`implies Deltaphi=12pi` or zero.
Promotional Banner

Similar Questions

Explore conceptually related problems

Two waves of frequencies 20 Hz and 30 Hz travel out from a common point. How wil they different phase at the end of 0.75 s ?

Two waves of frequencies 30 Hz and 40 Hz travel out from a common point. How they will differ in phase at the end of 0.95 s

Two waves of frequencies 6 Hz and 10 hz are superposed. The beat frequency produced is

A wave of frequency 400 Hz has a phase velocity of 300 m/s The phase difference between two displacement at a certain point at time t= 10^(-3) s is

Wave of frequency 500 Hz has a phase velocity 360 m//s . The phase difference between two displacement at a certain point at time 10^(-3)s apart will be

A wave of frequency 500 Hz has a phase velocity.of 350 m/s (ii) What is the phase difference between two displacements at a certain point at time 10^(-3) s apart?

Two points A and B are at a distance of 30 cm on a stretched string. A travelling wave of frequency 300 Hz and velocity 100 m/s is set up in the string. What will be the phase difference between points A and B ?