2 tuning forks A and B are sounded together , producing beats of frequency 10Hz .if a small piece of plasticine is affixed onto fork B the beat decreases .if A has a frequency of 300Hz what is the original frequency of B?
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Answer:
310
Explanation:
as beat 10 so B may be 310 or 290 , now
when some thing attached to it it's frequency decrease as mass increase, so as frequency decrease so let suppose frequency decreased 2 hz so if it is 290, it will be 288 now you can see beat is 12 that means it increases. but if 310 then it will 308 and beat will 8 , decrease .so it is 310
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