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A tuning fork of  known frequency 256 Hz makes 5 beats per second with the vibrating  string of a piano. The beat frequency decreases to 2 beats per second when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension was
  • a)
    256 + 2 Hz
  • b)
    256 – 2 Hz 
  • c)
    256 – 5 Hz
  • d)
    256 + 5 Hz
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A tuning fork of known frequency 256 Hz makes 5 beats per second with ...
A tuning fork of frequency 256 Hz  makes 5  beats/ second with the vibrating string of a piano. Therefore the frequency of the vibrating string of piano is (256 ± 5) Hz ie  either 261Hz or 251 Hz. When the tension in the piano string increases, its frequency will increases. Now since the beat frequency decreases, we can conclude that the frequency of piano string is 251Hz
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Most Upvoted Answer
A tuning fork of known frequency 256 Hz makes 5 beats per second with ...
First, let's calculate the original frequency of the piano string using the beat frequency and the frequency of the tuning fork.

The beat frequency is the difference between the frequency of the tuning fork and the frequency of the piano string.

Before increasing the tension, the beat frequency is 5 beats per second, so the difference between the frequency of the tuning fork (256 Hz) and the frequency of the piano string is 5 Hz.

Therefore, the frequency of the piano string before increasing the tension is 256 Hz - 5 Hz = 251 Hz.

So the correct option is: b) 256 251 Hz
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A tuning fork of known frequency 256 Hz makes 5 beats per second with the vibrating string of a piano. The beat frequency decreases to 2 beats per second when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension wasa)256 + 2 Hzb)256 – 2 Hzc)256 – 5 Hzd)256 + 5 HzCorrect answer is option 'C'. Can you explain this answer?
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A tuning fork of known frequency 256 Hz makes 5 beats per second with the vibrating string of a piano. The beat frequency decreases to 2 beats per second when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension wasa)256 + 2 Hzb)256 – 2 Hzc)256 – 5 Hzd)256 + 5 HzCorrect answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A tuning fork of known frequency 256 Hz makes 5 beats per second with the vibrating string of a piano. The beat frequency decreases to 2 beats per second when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension wasa)256 + 2 Hzb)256 – 2 Hzc)256 – 5 Hzd)256 + 5 HzCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A tuning fork of known frequency 256 Hz makes 5 beats per second with the vibrating string of a piano. The beat frequency decreases to 2 beats per second when the tension in the piano string is slightly increased. The frequency of the piano string before increasing the tension wasa)256 + 2 Hzb)256 – 2 Hzc)256 – 5 Hzd)256 + 5 HzCorrect answer is option 'C'. Can you explain this answer?.
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