Wave Mechanics Question 738
Question: The tension in a piano wire is 10N. What should be the tension in the wire to produce a note of double the frequency
[AIIMS 2001]
Options:
A) 5 N
B) 20 N
C) 40 N
D) 80 N
Show Answer
Answer:
Correct Answer: C
Solution:
$ n\propto \sqrt{T} $
Therefore $ \frac{n _{1}}{n _{2}}=\sqrt{\frac{T _{1}}{T _{2}}} $
Therefore $ \frac{n}{2n}=\sqrt{\frac{10}{T _{2}}} $
Therefore $ T _{2}=40N $
BETA
