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Question
If two tuning forks A and B are sounded together, they produce 4 beats per second. A is then slightly loaded with wax, they produce 2 beats when sounded again. The frequency of A is 256. The frequency of B will be
If two tuning forks A and B are sounded together, they produce 4 beats per second. A is then slightly loaded with wax, they produce 2 beats when sounded again. The frequency of A is 256. The frequency of B will be
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Solution
The correct option is B 252
Let the frequency of B be 'x'.
Difference between x and 256 is 4. Therefore 'x' can take 260 or 252.
When A is slightly loaded its frequency will decrease and the beats are found as 2, thus the frequency will change to 254.
X will be 252 to satisfy above conditions.
Let the frequency of B be 'x'.
Difference between x and 256 is 4. Therefore 'x' can take 260 or 252.
When A is slightly loaded its frequency will decrease and the beats are found as 2, thus the frequency will change to 254.
X will be 252 to satisfy above conditions.
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