First slide

Beats

Question

Two open organ pipes of length 25 cm and 25.5 cm produce 10 beat/sec. The velocity of sound will be

Easy

A

255 m/s
B

250 m/s
C

350 m/s
D

None of these

Solution

$n = n_{1} - n_{2} \Rightarrow 10 = \frac{v}{2 l_{1}} - \frac{v}{2 l_{2}} = \frac{v}{2} [\frac{1}{l_{1}} - \frac{1}{l_{2}}]$
$\Rightarrow 10 = \frac{v}{2} [\frac{1}{0 .25} - \frac{1}{0 .255}] \Rightarrow v = 255 m / s .$

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