12 Physics EXPERIMENT NO. 6 RESONANCE TUBE

 



MCQs – Resonance Tube Experiment

1. The resonance tube experiment is used to determine:

A. Speed of sound in solids
B. Speed of sound in air
C. Frequency of tuning fork
D. Amplitude of sound waves
Answer: B


2. Resonance occurs when:

A. Two waves have different frequencies
B. The natural frequency equals the forced frequency
C. Amplitude becomes zero
D. Sound gets absorbed
Answer: B


3. In a resonance tube, the first resonance occurs when the air column length is:

A. λ
B. λ/4
C. λ/2
D. 2λ
Answer: B


4. In the experiment, the second resonance occurs at air column length:

A. 3λ/4
B. λ/2
C. λ
D. 5λ/4
Answer: A


5. If the first resonance occurs at 18 cm and the second at 54 cm, the wavelength of sound is:

A. 36 cm
B. 72 cm
C. 54 cm
D. 18 cm
Answer: A
(Difference = 54 – 18 = 36 = λ/2 → λ = 72 cm? But first resonance gives λ/4 = 18 → λ = 72. Correct λ = 72 cm. Correct answer: B)

Corrected: Answer: B


6. The end correction in resonance tube is due to:

A. Water level fluctuations
B. Thermal expansion of tube
C. Sound waves extending beyond tube end
D. Tuning fork frequency variation
Answer: C


7. The speed of sound is calculated using:

A. v = f / λ
B. v = f × λ
C. v = λ / f
D. v = f²λ
Answer: B


8. The end correction is approximately equal to:

A. 0.6 × radius of tube
B. 1.2 × radius
C. 2 × radius
D. 0
Answer: A


9. The resonance tube works on which principle?

A. Diffraction
B. Interference
C. Resonance in closed organ pipe
D. Doppler effect
Answer: C


10. Increasing water level in the tube:

A. Increases length of air column
B. Decreases length of air column
C. Does not affect air column
D. Doubles air column
Answer: B



Quiz



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