This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 10 Oscillations And Waves – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 10 Oscillations And Waves Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The interference that occurs when waves combine to make a wave with a larger amplitude. A) Superposition. B) Destructive interference. C) Wave amplification. D) Constructive interference. Show Answer Correct Answer: D) Constructive interference. 2. A string of length 2.0 meters is fixed at both ends. It is vibrating in its fundamental mode, creating a standing wave pattern. If the speed of the wave along the string is 50 m/s, what is the frequency of the wave? A) 12.5 Hz. B) 12500 Hz. C) 1.25 Hz. D) 125 Hz. Show Answer Correct Answer: A) 12.5 Hz. 3. How would you describe the amplitude of a transverse wave? A) From centerline to crest or trough. B) Density of rarefaction. C) Density of the compression. D) From centerline to compression. Show Answer Correct Answer: A) From centerline to crest or trough. 4. The wave can propagate without any medium. It is the characteristic of these waves, except ..... A) Light. B) Electromagnetic wave. C) Infrared. D) Sound wave. Show Answer Correct Answer: D) Sound wave. 5. A pendulum is 0.75 meters long and has a period of 4.17 seconds. The Pendulum is on an unknown planet. What is the acceleration of gravity of the Unknown Planet? A) 1.7 m/s$_{2}$. B) 9.8 m/s$_{2}$. C) 3.4 m/s$_{2}$. D) Greater than 9.8 m/s$_{2}$. Show Answer Correct Answer: A) 1.7 m/s$_{2}$. 6. An object moves with simple harmonic motion with amplitude A. What is the position x of the object when the kinetic energy of the object equals twice its potential energy? A) $\frac{1}{\sqrt{3}}a$. B) 31a Mathematical EquivalenceON. C) All the above. D) None of the above. Show Answer Correct Answer: A) $\frac{1}{\sqrt{3}}a$. 7. The number of cycles or oscillation made in one second is defined as A) Amplitude. B) Frequency. C) Time taken. D) Period. Show Answer Correct Answer: B) Frequency. 8. All waves transmit ..... A) Matter. B) Energy. C) Particles. D) Sound. Show Answer Correct Answer: B) Energy. 9. Which would have the longest period?Pendulum A:A 200-g mass attached to a 1.0-m length stringPendulum B:A 400-g mass attached to a 0.5-m length string A) Pendulum A. B) Pendulum B. C) A & B are the same. D) None of the above. Show Answer Correct Answer: A) Pendulum A. 10. The distance between the two successive crests on a wave is called ..... A) Amplitude. B) Wavelength. C) Speed. D) Frequency. Show Answer Correct Answer: B) Wavelength. 11. Natural frequency is ..... A) An increase in amplitude of oscillations over time. B) A force applied at regular intervals. C) The frequency an object vibrates at when disturbed by an force which is not periodic. D) When an object is forced to vibrate at the same frequency as a periodic force applied to it. Show Answer Correct Answer: C) The frequency an object vibrates at when disturbed by an force which is not periodic. 12. Fill in the blank:The Rayleigh criterion for the minimum resolvable angle $\theta$ $D$ $\lambda$ $\theta = $ A) $\frac{\lambda}{D}$. B) $2.44 \frac{\lambda}{D}$. C) $\frac{D}{\lambda}$. D) $1.22 \frac{\lambda}{D}$. Show Answer Correct Answer: D) $1.22 \frac{\lambda}{D}$. 13. A wave has a frequency of 440 Hz and a wavelength of 0.75 m. What is its speed? A) 330 m/s. B) 550 m/s. C) 440 m/s. D) 586.7 m/s. Show Answer Correct Answer: A) 330 m/s. 14. A pendulum is 0.75 meters long and has a period of 4.17 seconds. The Pendulum is on an unknown planet. What is the gravity of the Unknown Planet? A) 9.8. B) Greater than 9.8. C) 1.7. D) 3.4. Show Answer Correct Answer: C) 1.7. 15. The maximum speed of a particle executing S.H.M. is 1m/s and its maximum acceleration is 1.57m/sec$^{2.}$ The time period of the particle will be: A) 2 sec. B) 1.57 sec. C) 3.14 sec. D) 4 sec. Show Answer Correct Answer: D) 4 sec. 16. What is the phase difference between a node and the successive (the next) antinode A) 45 degrees. B) 0 degrees. C) 180 degrees. D) 90 degrees. Show Answer Correct Answer: D) 90 degrees. 17. Fill in the blank:The speed of sound in air at room temperature is approximately ..... A) $150$. B) $1000$. C) $3000$. D) $340$. Show Answer Correct Answer: D) $340$. 18. If 10 waves pass an observer every second, what is the frequency of the wave? A) 1 Hz. B) 10 Hz. C) 0.1 Hz. D) 100 Hz. Show Answer Correct Answer: B) 10 Hz. 19. Frequency measures: A) The number of vibrations per minute. B) The number of vibrations per millisecond. C) The number of vibrations per second. D) The number of vibrations per hour. Show Answer Correct Answer: C) The number of vibrations per second. 20. What is meant by forced oscillation? A) When an object is vibrating at its natural frequency. B) When an object continues to vibrate after the disturbance is removed. C) When an object vibrates in a resistive medium under the action of external force which acts independently of the restoring force. D) When an object receives a vibration from external sources and comes to rest after some interval of time. Show Answer Correct Answer: C) When an object vibrates in a resistive medium under the action of external force which acts independently of the restoring force. 21. Grandfather clocks are designed, so they can be adjusted by moving the weight at the bottom of thependulum up or down. Suppose you have a grandfather clock at home that runs slow. Which of thefollowing adjustments of the weight would make it more accurate? A) Lower the weight. B) Raise the weight. C) Add more mass to the weight. D) Remove some mass from the weight. Show Answer Correct Answer: B) Raise the weight. 22. If the length of a simple pendulum is quadrupled, its period will: A) Remain the same. B) Halve. C) Increase by a factor of four. D) Double. Show Answer Correct Answer: D) Double. 23. ..... deals with how much time an object oscillates, while ..... is how often it oscillates. A) Period; cycle. B) Frequency; period. C) Wave; cycle. D) Period; frequency. Show Answer Correct Answer: D) Period; frequency. 24. The combined result of adding the amplitudes of overlapping waves A) Vector. B) Addition. C) Resultant wave. D) Standing wave. Show Answer Correct Answer: C) Resultant wave. 25. Changing which of the following variables will change how fast the wave travels? A) Changing the medium the wave travels through. B) Changing the wavelength of the wave. C) Changing the period of the wave. D) Changing the frequency of the wave. Show Answer Correct Answer: A) Changing the medium the wave travels through. 26. The end point of a spring vibrates with a period of 2 s when a mass m is attached toit. When this mass is increased by 2 kg, the period is found to be 3 s. What is thevalue of? A) 0.16 g. B) 1.6 g. C) 1.6 kg. D) 16 kg. Show Answer Correct Answer: C) 1.6 kg. 27. What determines the amplitude of a wave? A) Amount of energy. B) Frequency. C) Wavelength. D) Speed of wave. Show Answer Correct Answer: A) Amount of energy. 28. What is the unit for the period of a pendulum? A) Meter. B) Second. C) Newton. D) M/s/s. Show Answer Correct Answer: B) Second. 29. Calculate the fundamental frequency of an open organ pipe of length 0.7 m. What will be the fundamental frequency if one end of the pipe is closed. The velocity of sound in air = 340 m/s. A) 321.4. B) 521.4. C) 721.4. D) 121.4. Show Answer Correct Answer: D) 121.4. 30. A 20 N weight is hung from the bottom of a vertical spring, causing it to stretch 20 cm.a. What is the spring constant?b. Calculate the period of the oscillation if the 20N weight is replaced by anotherweight of 5N, assuming that the spring is stretched and released from rest. A) $100 0.45$. B) 100 0.45 Mathematical EquivalenceON. C) All the above. D) None of the above. Show Answer Correct Answer: A) $100 0.45$. 31. Which of these does not affect the period of a pendulum? A) Length. B) Gravity. C) Mass. D) None of the above. Show Answer Correct Answer: C) Mass. 32. Amplitude is measured in ..... A) Seconds. B) Metres. C) Hertz. D) Metres per second. Show Answer Correct Answer: B) Metres. 33. A wave travelling along a string is described by, y(x, t) = 0.002 sin (40.0 x-2.0 t), in which the numerical constants are in SI units .The amplitude, (b) the wavelength, and (c) the period and frequency of the wave are respectively: A) 0.007, 0.957, 8.14, 9.318. B) 0.009, 0.557, 9.14, 0.818. C) 0.004, 0.657, 5.14, 0.518. D) 0.002, 0.157, 3.14, 0.318. Show Answer Correct Answer: D) 0.002, 0.157, 3.14, 0.318. 34. The bob vibrates up and down on a vertical spring. If the period of the motion is 2 seconds, the frequency ..... A) Two cycles per second. B) One cycle per second. C) One half cycle per second. D) Also 2 seconds. Show Answer Correct Answer: C) One half cycle per second. 35. A wave in which the oscillations are at right angles to the direction of wave travel is called a A) Transverse wave. B) Compression wave. C) Oscillating wave. D) Longitudinal wave. Show Answer Correct Answer: A) Transverse wave. 36. If the length of a simple pendulum is doubled, its period will: A) Double. B) Increase by a factor of sqrt(2). C) Decrease by a factor of sqrt(2). D) Halve. Show Answer Correct Answer: B) Increase by a factor of sqrt(2). 37. When a body is executing SHM, the restoring force acting on the body is proportional to A) The frequency. B) The displacement. C) The length of the pendulum. D) The mass. Show Answer Correct Answer: B) The displacement. 38. A mass is attached to a vertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a maximum? A) At either A or B. B) Midway between A and B. C) One-third of the way between A and B. D) One-fourth of the way between A and B. Show Answer Correct Answer: B) Midway between A and B. 39. Find the mechanical energy of a block-spring system having a spring constant of 1.3N/cm and an amplitude of 2.4 cm. A) 3.7 $\times$. B) 3.7 $\times$. C) 3.7 $\times$. D) 3.7 $\times$. Show Answer Correct Answer: A) 3.7 $\times$. 40. The acceleration of simple pendulum is directed ..... A) Away from the euilibrium position. B) Towards the velocity direction. C) Toward the equilibrium position. D) Toward the maximum displacement. Show Answer Correct Answer: C) Toward the equilibrium position. 41. A mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy? A) Elastic potential. B) Kinetic. C) Mechanical. D) Gravitational potential. Show Answer Correct Answer: A) Elastic potential. 42. For light waves, what does the displacement represent? A) Water level. B) Pressure variations. C) Magnetic field. D) Electric field. Show Answer Correct Answer: D) Electric field. 43. True or False:According to Fermat's principle, the path taken by light between two points is the one that takes the least time. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 44. Which statement is FALSE regarding simple harmonic motion? A) The restoring force is proportional to displacement. B) The motion is periodic. C) The acceleration is constant. D) The energy oscillates between kinetic and potential forms. Show Answer Correct Answer: C) The acceleration is constant. 45. In a resonating pipe which is open at both ends, there ..... A) Are displacement nodes at each end. B) Are displacement antinodes at each end. C) Is a displacement node at one end and a displacement antinode at the other end. D) None of the above. Show Answer Correct Answer: B) Are displacement antinodes at each end. 46. Wave speed is measured in ..... A) Metres. B) Metres per second. C) Hertz. D) Seconds. Show Answer Correct Answer: B) Metres per second. 47. An area where particles are close together when a longitudinal wave is travelling through them is called a ..... A) Compression. B) Wavelength. C) Amplitude. D) Rarefaction. Show Answer Correct Answer: A) Compression. 48. In which of the media below does sound travel the fastest? A) Solid. B) Liquid. C) Gases. D) None of the above. Show Answer Correct Answer: A) Solid. 49. A sound wave has a frequency of 50 Hz. If its wavelength is 3 m, calculate its wave speed. A) 60 m/s. B) 75 m/s. C) 150 m/s. D) 16.7 m/s. Show Answer Correct Answer: C) 150 m/s. 50. A mass attached to a spring vibrates back and forth. At the equilibrium position, the A) Velocity reaches a maximum. B) Velocity reaches zero. C) Net force reaches a maximum. D) Acceleration reaches a maximum. Show Answer Correct Answer: A) Velocity reaches a maximum. 51. The time that it takes to complete one wave cycle is called the ..... A) Amplitude. B) Wavelength. C) Period. D) Frequency. Show Answer Correct Answer: C) Period. 52. An imaginary line that is perpendicular to any surfaces is called ..... A) Straight line. B) Normal line. C) Vertical line. D) Imaginary line. Show Answer Correct Answer: B) Normal line. 53. ..... is (are) mechanical waves. A) Water waves only. B) Sound waves only. C) Microwaves only. D) Water waves and sound waves. Show Answer Correct Answer: D) Water waves and sound waves. 54. In a simple pendulum undergoing SHM, the restoring force is provided by: A) The vertical component of the tension. B) The inertia of the bob. C) The component of gravity tangent to the path. D) The horizontal component of the tension. Show Answer Correct Answer: C) The component of gravity tangent to the path. 55. What is the effect of damping on resonance? A) Decrease slightly the value of proper frequency. B) Reduce the maximum amplitude of an oscillator. C) The shape of the curve of resonance becomes broad. D) All. Show Answer Correct Answer: D) All. 56. Resonance occurs when: A) An external force has a frequency equal to the system's natural frequency. B) An external force has a frequency much higher than the system's natural frequency. C) The amplitude of oscillation is minimized. D) The system's damping is maximum. Show Answer Correct Answer: A) An external force has a frequency equal to the system's natural frequency. 57. The number of complete oscillations that are made by an oscillating body in one second is known as ..... A) Time of amplitude. B) Periodic time. C) Amplitude. D) Frequency. Show Answer Correct Answer: D) Frequency. 58. Destructive interference is A) When two waves add together and produce a wave of smaller or no amplitude. B) When two waves add together and produce a single wave of greater amplitude. C) When two waves reflect. D) None of the above. Show Answer Correct Answer: A) When two waves add together and produce a wave of smaller or no amplitude. 59. The total mechanical energy of a simple harmonic oscillator is proportional to: A) The square root of its spring constant. B) The square of its amplitude. C) Its period. D) Its maximum velocity. Show Answer Correct Answer: B) The square of its amplitude. 60. The speed of sound at 20 degrees celcius is: A) 621 m/s. B) 365 m/s. C) 343 m/s. D) 331 m/s. Show Answer Correct Answer: C) 343 m/s. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Physics (Part I) Chapter 10 Oscillations And Waves Quiz 1Class 11 Physics (Part I) Chapter 10 Oscillations And Waves Quiz 3Class 11 Physics (Part I) Chapter 10 Oscillations And Waves Quiz 4Class 11 Physics (Part I) Chapter 10 Oscillations And Waves Quiz 5Class 11 Physics (Part I) Chapter 1 Physical World And Measurement QuizClass 11 Physics (Part I) Chapter 2 Kinematics QuizClass 11 Physics (Part I) Chapter 3 Laws Of Motion QuizClass 11 Physics (Part I) Chapter 4 Work Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books