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1. The acceleration of a simple harmonic oscillator:(UEE:2003) A. Remains constant during its motion. B. Remains non-zero. C. Attains its maximum value when its amplitude is zero. D. Attains maximum value when its velocity is maximum. 2. A particle that under goes simple harmonic motion has a period of 0.4sec. and an amplitude of 12mm.The maximum velocity of the particle is:(UEE:2003) A. 3cm/s. B. 12cm/s. c. 9.42cm/s. D. 18.84cm/s 3. A pipe, 68cm long is open at one end and closed at the other. When air is blown across the open end sound is produced at 110Hz. What is the velocity of sound along the pipe? (UEE: 2004). A. 598.4m/s B. 299.2m/s C. 334.6m/s D. 149.6m/s 4. The total energy of particle executing Simple Harmonic Motion is: (UEE:2004) A. Zero. B. directly proportional to the amplitude C. directly proportional to the square of the amplitude. D. inversely proportional to the square of the amplitude 5. A point source broadcasts sound in to a uniform medium. If the distance from the source is tripled, how does the intensity change?(UEE:2004) A. It remains unchanged. C. It becomes one-third as large. B. It becomes three times larger. D. It becomes one-ninth as large. 6. The loudness of sound changes from L1=30db to L2=60db. What is the ratio of intensities I2/I1 in the two cases? (UEE:2004) A. 2. B. 4 C. 600. D. 1000. 7. If the amplitude of sine wave is doubled, the intensity (UEE:2004) A. Remains the same. B. Increases by factor 4. C. Increases by factor 2. D. Increases by factor 16. 8. A wave has a speed of 50m/s and a wavelength of 25000m.What is the frequency of the wave? (UEE: 2005). A. 2x10-3Hz. B. 5x102Hz. C. 6x101Hz. D. 1.8x106Hz 9. An oscillating system is used to create a succession of waves on a water surface. The rate of wave generation is one every 0.33 seconds. What is the period of these waves? (UEE: 2005). A. 0.3 seconds. B. 2.0 second. C. 1.0 seconds. D. 3.0 seconds. 10. An alternating current is represented by I (t) = (10A) sin (100πt).What are the amplitude and frequency of the alternating current? (UEE: 2005). A. 100A, 75Hz. B. 10A, 50Hz C. 10A, 100Hz. D. 5A, 25Hz.

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