First slide

Equation of wave

Question

Two sinusoidal waves with same wavelengths and amplitudes travel in opposite directions along a string with a speed of 10 m/s. If the minimum time interval between two instants when the string is flat is 0.5 sec, the wavelength of the wave is

Moderate

A

25 m
B

20 m
C

15 m
D

10 m

Solution

$\frac{T}{2} = 0.5 sec \Rightarrow T = 1 sec ∴ f = \frac{1}{T} = 1 H z$
$∴ λ = \frac{V}{f} = \frac{10}{1} m = 10 m$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App