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IIT-JEE 2009 Paper 2 Offline
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A student performed the experiment to measure the speed of sound in air using resonance air-column method. Two resonances in the air-column were obtained by lowering the water level. The resonance with the shorter air-column is the first resonance and that with the longer air-column is the second resonance. Then,

A
the intensity of the sound heard at the first resonance was more than that at the second resonance.
B
the prongs of the tuning fork were kept in a horizontal plane above the resonance tube.
C
the amplitude of vibration of the ends of the prongs is typically around 1 cm.
D
the length of the air-column at the first resonance was somewhat shorter than 1/4th of the wavelength of the sound in air.
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JEE Advanced 2016 Paper 2 Offline (1) JEE Advanced 2015 Paper 1 Offline (1) IIT-JEE 2009 Paper 2 Offline (1)
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