A) 138 Hz
B) 132 Hz
C) 144 Hz
D) 276 Hz
E) 270 Hz
Correct Answer: C
Solution :
The frequencies of tuning forks are the terms of an AP whose common difference is 6. \[\therefore \] \[l=a+(n-1)d\] \[2a=a+(24-1)\times 6\] \[a=23\times 6\] \[=138\] \[\therefore \]Second frequency\[=138+6\] \[=144\text{ }Hz\]You need to login to perform this action.
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