12 Physics Experiment no. 4 Sonometer I

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Result the graph of reciprocal of vibrating  length against n (frequency) is straight line
hence law of vibrating length is verified.

1. In a sonometer, the frequency of vibration of the wire is inversely proportional to:

A. Length
B. Square root of tension
C. Density
D. Radius

Answer: A

2. For a vibrating string in a sonometer, the fundamental frequency is given by:



3. The resonating length of the sonometer wire increases when:

A. Tension increases
B. Frequency of tuning fork decreases
C. Mass per unit length decreases
D. Length of the wire decreases.

Answer: B

4. When the length of the vibrating segment of the wire is doubled, the fundamental frequency becomes:

A. Doubled
B. Halved
C. Four times
D. One-fourth

Answer: B

5. The physical quantity kept constant during resonance in a typical sonometer experiment is:

A. Length
B. Tension
C. Mass per unit length
D. Both B and C

Answer: D

6. If tension in the sonometer wire becomes four times, the frequency:

A. Doubles
B. Becomes four times
C. Becomes half
D. Remains unchanged





7. The mass per unit length of a wire is also called:

A. Linear density
B. Volume density
C. Surface density
D. Elastic constant

Answer: A

8. In a sonometer, resonance occurs when:

A. Frequency of tuning fork equals the natural frequency of the wire
B. Wire is under maximum tension
C. Length is minimum
D. Wire vibrates in higher harmonics only

Answer: A

9. If the fundamental frequency of a wire is 200 Hz, the frequency of the second harmonic is:

A. 100 Hz
B. 200 Hz
C. 300 Hz
D. 400 Hz

Answer: D

10. A sonometer wire of length LL resonates with a tuning fork of frequency ff. If the length is made L/3​, the new frequency is:






 










Quiz



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