1) 1. In a sonometer, the frequency of vibration of the wire is inversely proportional to a) A. Length b) B. Square root of tension c) C. Density d) D. Radius 2) 2. For a vibrating string in a sonometer, the fundamental frequency is given by a) b) c) d) 3) 3. The resonating length of the sonometer wire increases when: a) A. Tension increases b) B. Frequency of tuning fork increases c) C. Mass per unit length decreases d) D. Length of the wire decreases 4) 4. When the length of the vibrating segment of the wire is doubled, the fundamental frequency becomes: a) A. Doubled b) B. Halved c) C. Four times d) D. One-fourth 5) 5. The physical quantity kept constant during resonance in a typical sonometer experiment is: a) A. Length b) B. Tension c) C. Mass per unit length d) D. Both B and C 6) 6. If tension in the sonometer wire becomes four times, the frequency a) A. Doubles b) B. Becomes four times c) C. Becomes half d) D. Remains unchanged 7) 7. The mass per unit length of a wire is also called: a) A. Linear density b) B. Volume density c) C. Surface density d) D. Elastic constant 8) 8. In a sonometer, resonance occurs when: a) A. Frequency of tuning fork equals the natural frequency of the wire b) B. Wire is under maximum tension c) C. Length is minimum d) D. Wire vibrates in higher harmonics only 9) 9. If the fundamental frequency of a wire is 200 Hz, the frequency of the second harmonic is: a) A. 100 Hz b) B. 200 Hz c) C. 300 Hz d) D. 400 Hz 10) 10. A sonometer wire of length L resonates with a tuning fork of frequency f If the length is made L /3 a) f b) 3f c) f/9 d) 2f

JKC Sonometer I

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