Question
Question: On sounding tuning fork A with another tuning fork B of frequency 384 Hz, 6 beats are produced per s...
On sounding tuning fork A with another tuning fork B of frequency 384 Hz, 6 beats are produced per second. After loading the prongs of A with wax and then sounding it again with B, 4 Beats are produced per second what is the frequency of the tuning fork A
A
388 Hz
B
80 Hz
C
378 Hz
D
390 Hz
Answer
378 Hz
Explanation
Solution
Probable frequency of A is 390 Hz and 378 Hz and After loading the beats are decreasing from 6 to 4 so the original frequency of A will be n2 = n 1 – x = 378 Hz.
