A) 340 m/s
B) 332 m/s
C) 153 m/s
D) 306 m/s
Correct Answer: D
Solution :
The frequency of beats is given by \[n={{n}_{1}}-{{n}_{2}}=\frac{\upsilon }{{{\lambda }_{1}}}-\frac{\upsilon }{{{\lambda }_{2}}}=\upsilon \left( \frac{1}{0.5}-\frac{1}{0.51} \right)\] \[12=\upsilon (2-1.9608)=\upsilon \times 0.0392\] \[\upsilon =\frac{12}{0.0392}\approx 306\,m/s\]
You need to login to perform this action.
You will be redirected in
3 sec
