Wave Mechanics Question 666
Question: Two tones of frequencies $ n _{1} $ and $ n _{2} $ are sounded together. The beats can be heard distinctly when
Options:
A) $ 10<(n _{1}-n _{2})<20 $
B) $ 5<(n _{1}-n _{2})>20 $
C) $ 5<(n _{1}-n _{2})<20 $
D) $ 0<(n _{1}-n _{2})<10 $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] As number of beats/sec = diff. in frequencies has to be less than 10,
Therefore $ 0<(n _{1}-n _{2})<10 $
BETA
