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jee

In the experiment to determine the speed of sound using a resonance column:...

In the experiment to determine the speed of sound using a resonance column:

Prongs of the tuning fork are kept in a vertical plane

Prongs of the tuning fork are kept in a horizontal plane

In one of the two resonances observed, the length of the resonating air column is close to the wavelength of sound in air

In one of the two resonances observed, the length of the resonating air column is close to half of the wavelength of sound in air
Solution:
Length of air column in resonance is odd integer multiple of \(\frac{\lambda}{4}\). Correct option is (a).