If two tuning forks A and B are sounded together, the number of beats produced per second is 5. The frequency of A is 250Hz. If the load is attached to tuning fork B, again sounded together, the number of beats produced per second is 3. The frequency of B is

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Q. The number of beats produced per second by two tuning forks when sounded together is

4

.One of them has a frequency of

250 H z

and if it is waxed, number of beats become

6

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Q. 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

Q. When tuning forks

A

and

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are sounded together,

5

beats per second are heard. The frequency of

A

250 Hz

. On loading fork

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with wax,

2

beats per second are produced with fork

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A tuning fork of frequency 100 when sounded together with another tuning fork of unknown frequency produces 2 beats per second. On loading the tuning fork whose frequency is not known and sounded together with a tuning fork of frequency 100 produces one beat, then the frequency of the other tuning fork is

[NCERT 1977]

Q. A tuning fork produces

8

beats per second when sounded together with a fork of frequency

340 H z .

When the prongs of tuning fork C are filled a little, the number of beats produced per second decreases to 4. Find the frequency of the tuning fork C before filling its prongs

.

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