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This book consists of practice questions for 11 Grades to learn and improve on their Physics Subjects. Answers are ready and already highlighted on the question sheets.

### Text of Physics Workbook 12 Grade

1. Which of the following is not an example of approximate simple harmonic motion?a. a ball bouncing on the floorb. a child swinging on a swingc. a piano wire that has been struckd. a cars radio antenna waving back and forth

2. Vibration of an object about an equilibrium point is called simple harmonic motion when the restoring force is proportional toa. time.b. displacement.c. a spring constant.d. mass.

3. Tripling the displacement from equilibrium of an object in simple harmonic motion will change the magnitude of the objects maximum acceleration by what factor?a. one-thirdb. 1c. 3d. 9

4. A mass attached to a spring vibrates back and forth. At the equilibrium position, thea. acceleration reaches a maximum.b. velocity reaches a maximum.c. net force reaches a maximum.d. velocity reaches zero.

5. A mass attached to a spring vibrates back and forth. At maximum displacement, the spring force and thea. velocity reach a maximum.b. velocity reach zero.c. acceleration reach a maximum.d. acceleration reach zero.

6. A simple pendulum swings in simple harmonic motion. At maximum displacement,a. the acceleration reaches a maximum.b. the velocity reaches a maximum.c. the acceleration reaches zero.d. the restoring force reaches zero.

7. A mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy?a. kineticb. mechanicalc. gravitational potentiald. elastic potential

8. The angle between the string of a pendulum at its equilibrium position and at its maximum displacement is the pendulumsa. period.b. frequency.c. vibration.d. amplitude.

9. For a mass hanging from a spring, the maximum displacement the spring is stretched or compressed from its equilibrium position is the systemsa. amplitude.b. period.c. frequency.d. acceleration.

10. A pendulum swings through a total of 28. If the displacement is equal on each side of the equilibrium position, what is the amplitude of this vibration? (Disregard frictional forces acting on the pendulum.)a. 28b. 14c. 56d. 7.0

11. A child on a playground swings through a total of 32. If the displacement is equal on each side of the equilibrium position, what is the amplitude of this vibration? (Disregard frictional forces acting on the swing.)a. 8.0b. 16c. 32d. 64

Garin Rahmat NugrohoHighlight

Garin Rahmat NugrohoHighlight

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12. For a system in simple harmonic motion, which of the following is the time required to complete a cycle of motion?a. amplitudeb. periodc. frequencyd. revolution

13. For a system in simple harmonic motion, which of the following is the number of cycles or vibrations per unit of time?a. amplitudeb. periodc. frequencyd. revolution

14. How are frequency and period related in simple harmonic motion?a. They are directly related.b. They are inversely related.c. Their sum is constant.d. Both measure the number of cycles per unit

of time.

15. If a pendulum is adjusted so that its frequency changes from 10 Hz to 20 Hz, its period will change from n seconds toa. n/4 seconds.b. n/2 seconds.c. 2n seconds.d. 4n seconds.

16. Which of the following features of a given pendulum changes when the pendulum is moved from Earths surface to the moon?a. the massb. the lengthc. the equilibrium positiond. the restoring force

17. A wave travels through a medium. As the wave passes, the particles of the medium vibrate in a direction perpendicular to the direction of the waves motion. The wave isa. longitudinal.b. a pulse.c. electromagnetic.d. transverse.

18. Which of the following is a single nonperiodic disturbance?a. pulse waveb. periodic wavec. sine waved. transverse wave

19. One end of a taut rope is fixed to a post. What type of wave is produced if the free end is quickly raised and lowered one time?a. pulse waveb. periodic wavec. sine waved. longitudinal wave

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20. Each compression in the waveform of the longitudinal wave shown above corresponds to what feature of the transverse wave below it?a. wavelengthb. crestsc. troughsd. amplitude

21. Each stretched region in the waveform of the longitudinal wave shown above corresponds to what feature of the transverse wave below it?a. wavelengthb. crestsc. troughsd. amplitude

22. Which of the following most affects the wavelength of a mechanical wave moving through a medium? Assume that the frequency of the wave remains constant.a. the nature of the mediumb. the amplitudec. the height of a crestd. the energy carried by the wave

23. Suppose that two sound waves passing through the same medium have different wavelengths. Which of the following is most likely to be the reason for the differing wavelengths?a. the nature of the mediumb. differences in amplitudec. differences in frequencyd. the type of wave

24. When a mechanical waves amplitude is tripled, the energy the wave carries in a given time interval is increased by a factor ofa. 3.b. 6.c. 9.d. 18.

25. When a mechanical waves amplitude is reduced by half, the energy the wave carries in a given time interval isa. doubled.b. increased by a factor of 1.4.c. decreased to one-half.d. decreased to one-fourth.

26. Two mechanical waves can occupy the same space at the same time because wavesa. are matter.b. are displacements of matter.c. do not cause interference patterns.d. cannot pass through one another.

27. Two waves traveling in opposite directions on a rope meet and undergo complete destructive interference. Which of the following best describes the waves a moment after the waves meet and coincide?a. The waves no longer exist.b. The waves continue unchanged.c. The waves reflect and travel backward.d. A single wave continues along the rope.

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28. When two mechanical waves coincide, the amplitude of the resultant wave is always ____ the amplitudes of each wave alone.a. greater thanb. less thanc. the sum ofd. the same as

29. Two mechanical waves that have positive displacements from the equilibrium position meet and coincide. What kind of interference occurs?a. constructiveb. destructivec. complete destructive d. none

30. Two mechanical waves meet and coincide. One wave has a positive displacement from the equilibrium position, and the other wave has a negative displacement. What kind of interference occurs?a. constructiveb. destructivec. complete constructive d. none

31. Which of the following types of interference will occur when the pulses in the figure above meet?a. no interferenceb. constructive interferencec. destructive interference d. total interference

32. Which of the following types of interference will occur when the pulses in the figure above meet?a. no interferenceb. constructive interferencec. destructive interferenced. total interference

33. Which of the following types of interference will occur when the pulses in the figure above meet?a. no interferenceb. complete constructive interferencec. partial interferenced. complete destructive interference

34. Consider two identical wave pulses on a rope having a fixed end. Suppose the first pulse reaches the end of the rope, is reflected back, and then meets the second pulse. When the two pulses overlap exactly, what will be the amplitude of the resultant pulse?a. zerob. same as the original pulsesc. double the amplitude of the original pulsesd. half the amplitude of the original pulses

35. Waves arriving at a fixed boundary area. neither reflected nor inverted.b. reflected but not inverted.c. reflected and inverted.d. inverted but not reflected.

36. Waves arriving at a free boundary area. neither reflected nor inverted.b. reflected but not inverted.c. reflected and inverted.d. inverted but not reflected.

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37. A student sends a pulse traveling on a taut rope with one end attached to a post. What will the student observe?a. The pulse will not be reflected if the rope is

free to slide up and down on the post.b. The pulse will be reflected and inverted if the

rope is free to slide up and down on the post.c. The pulse will be reflected and inverted if the

rope is fixed to the post.d. The pulse will not be inverted if the rope is

fixed to the post.

38. Standing waves are produced by periodic waves ofa. any amplitude and wavelength traveling in

the same direction.b. the same amplitude and wavelength traveling

in the same direction.c. any amplitude and wavelength traveling in

opposite directions.d. the same frequency, amplitude, and

wavelength traveling in opposite directions.

39. A 2.0 m long stretched rope is fixed at both ends. Which wavelength would not produce standing waves on this rope?a. 2.0 mb. 3.0 mc. 4.0 md. 6.0 m

40. Which of the following wavelengths would produce standing waves on a string approximately 3.5 m long?a. 2.33 mb. 2.85 mc. 3.75 md. 4.55 m

41. Which of the following wavelengths would not produce standing waves on a rope whose length is 1 m?a. 2/3 mb. 1 mc. 2 md. 2 1/4 m

42. The standing wave shown in the diagram above would be produced on a string of length L by a wave having wavelengtha. 1/2 L.b. L.c. 2 L.d. 4 L.

43. How many nodes and antinodes are shown in the standing wave above?a. two nodes and three antinodesb. one node and two antinodesc. one-third node and one antinoded. three nodes and two antinodes

44. A 3.0 m long stretched string is fixed at both ends. If standing waves with a wavelength of two-thirds L are produced on this string, how many nodes will be formed?a. 0b. 2c. 3d. 4

45. What is the fewest number of nodes a standing wave can have?a. 1

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