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If the speed of sound in air is v, then the minimum possible length of the closed end organ pipe which resonates to frequency f will be

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Important Questions on Waves

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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>EXERCISE 14.3>Q 24
A pipe closed at one end produces a fundamental note of 412 Hz. It is cut into two pieces of equal length, then the fundamental notes produced by the two pieces are,
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>EXERCISE 14.3>Q 26
A cylindrical tube, open at both the ends, has a fundamental frequency f. The tube is dipped vertically in water so that half of its length is inside the water. The new fundamental frequency is
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>EXERCISE 14.3>Q 27
A tuning fork of frequency 500 Hz is sounded on a resonance tube. The first and second resonances are obtained at 17 cm and 52 cm. The velocity of sound is,
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>EXERCISE 14.3>Q 28
A longitudinal sound wave given by, p=2.5sinπ2(x-600t), where t is in second, is sent down a closed organ pipe. If the pipe vibrates in its second overtone, the length of the pipe is,
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>EXERCISE 14.4>Q 29
In a large room, a person receives direct sound wave from a source 120 m away from him. He also receives wave from the same source which reaches him after being reflected from 25 m high ceiling at a point midway between them. The two waves interfere constructively for wavelength of (in meter)
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>EXERCISE 14.4>Q 30
Two sound waves having intensities 4 unit and 9 unit coming from two coherent sources arrive at a point along the same line simultaneously in same phase. Resultant intensity at the point will be
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>EXERCISE 14.5>Q 41
25 tuning forks are arranged in series in the order of decreasing frequency. Any two successive forks produce 3 beats per second. If the frequency of the first tuning fork is the octave of the last fork, then the frequency of the 21st fork is,
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Gamma Question Bank for Engineering Physics>Chapter 14 - Waves>EXERCISE 14.5>Q 42
Two identical wires are stretched by the same tension of 100 N and each emits a note of frequency 200 Hz. If the tension in one wire is increased by 1 N, then the beat frequency is,