JEE Advanced 2018 Physics question
In an experiment to measure the speed of sound by a resonating air column, a tuning fork of frequency 500 is used. The length of the air column is varied by changing the level of water in the resonance tube. Two successive resonances are heard at air columns of length 50.7 and 83.9 . Which of the following statements is (are) true?
Answer: (A),(C)
Solution
Successive resonances in a closed pipe differ by : cm, so cm (C true) and m/s (A true). For the fundamental, cm, which is far less than 50.7 cm, so (D) is false. (B) Taking 50.7 cm as the third
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