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Waves Test - 83
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Waves Test - 83
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  • Question 1/10
    4 / -1
    A stretched wire of length 110 cm is divided into three segments whose frequencies are in ratio 1 : 2 : 3. Their lengths must be
    Solutions

  • Question 2/10
    4 / -1
    Unlike a laboratory sonometer, a stringed instrument is seldom plucked in the middle. Supposing a sitar string is plucked at about 1/4 th of its length from the end. The most prominent harmonic would be
  • Question 3/10
    4 / -1
    If n1, n2, n3 are the frequencies of segments of a stretched string, the frequency n of the string is given by
  • Question 4/10
    4 / -1

    Solutions

  • Question 5/10
    4 / -1
    An Indian submarine and an enemy submarine move towards each other during maneuvers in motionless water in the Indian ocean. The Indian submarine moves at 50 km/h, and the enemy submarine at 70 km/h. The Indian sub sends out a sonar signal (sound wave in water) at 1000 Hz. Sonar waves travel at 5500 km/h. What is the frequency detected by the Indian submarine

    Solutions

  • Question 6/10
    4 / -1
    Two trains, one coming towards and another going away from an observer both at 4 m/s produce whistle simultaneously of frequency 300 Hz. Find the number of beats produced
    Solutions

  • Question 7/10
    4 / -1
    A source of sound emits 400 πW power which is uniformly distributed over a sphere of 10 m radius. What is the loudness of sound on the surface of a sphere?
    Solutions

  • Question 8/10
    4 / -1
    In the 3rd overtone of an open organ pipe, there are (N-stands for nodes and A -for antinodes)
  • Question 9/10
    4 / -1
    A sine wave has an amplitude A and wavelength λ. Let V be the wave velocity and v be the maximum velocity of a particle in the medium. Then
    Solutions

  • Question 10/10
    4 / -1

    Solutions

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