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ECAT Physics Oscillations Mcq Questions

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1. In vibratory motion




2. The waveform of S.H.M. is




3. S.I unit of frequency is




4. In S.H.M. the velocity of a particle is maximum at




5. The acceleration of a projection on the diameter for a particle moving along a circle is




6. Total energy of a body executing S.H.M is directly proportional to




7. The time period of a second pendulum is




8. The length of second pendulum is




9. If length of second pendulum becomes four times then its time period will become




10. The force responsible for the vibratory motion of the simple pendulum is




11. The frequency of the second pendulum is




12. The SI unit of force constant is identical with that of




13. When the amplitude of a wave become double its energy become




14. A simple pendulum suspended form the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely the time period is




15. The energy of SHM is maximum at




16. The displacement of SHM is written as X = X? sin?t if displacement is written by X = X? son ?t then phase constant will be equal to




17. The product of frequency and time period is equal to




18. For what displacement the P.E becomes 1/4 of its maximum value?




19. Sharpness of resonance is




20. Which one dows not work according to resonance?




21. The restoring force acting on simple pendulum is given by




22. Phase of SHM describes




23. Natural frequency of simple pendulum depends upon




24. Electrical resonance is observed in




25. Total distance traveled by bob of simple pendulum in one vibration is equal to




26. When K.E energy of SHM is maximum its




27. In damped harmonic oscillation which one decreases?




28. Forced vibration are known as




29. Mass attached to a spring executes.




30. At Murree Hills (Assume value of g changes). If we use a simple pendulum as time standard then one second duration will.




31. The velocity of the mass attached to a spring is maximum at




32. The projection of the particle moving in a circle with non-uniform speed executes.




33. Displacement of the body in S.H.M is equal to amplitude when body is at




34. For a simple pendulum the restoring force is caused by




35. The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body




36. A cup of milk is placed in a microwave oven. Tell which statements is false (1) Milk will be heated up only (2) Cup will remain cool (3) Both cup and mild will get hot.




37. In case of a simple pendulum the cause of damping is




38. The energy absorbed by a body is ________________ at resonance.