Wave Mechanics Question 746
Question: The length of a sonometer wire tuned to a frequency of 250 Hz is 0.60 metre. The frequency of tuning fork with which the vibrating wire will be in tune when the length is made 0.40 metre is
[JIPMER 2002]
Options:
A) 250 Hz
B) 375 Hz
C) 256 Hz
D) 384 Hz
Show Answer
Answer:
Correct Answer: B
Solution:
$ n _{1}l _{1}=n _{2}l _{2}\Rightarrow 250\times 0.6=n _{2}\times 0.4\Rightarrow n _{2}=375 $
$ \Rightarrow n _{2}=375Hz $
BETA
