This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part Ii > Class 11 Physics (Part Ii) Chapter 16 Oscillations – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 16 Oscillations Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When the damping force increases, what happens to the amplitude of the forced oscillation? A) The amplitude is zero. B) The amplitude remains unchanged. C) The amplitude decreases. D) The amplitude increases. Show Answer Correct Answer: C) The amplitude decreases. 2. In the equation f =-kx, the unit of k is ..... A) Newton. B) Newton-second. C) Newton per metre. D) Metre per second. Show Answer Correct Answer: C) Newton per metre. 3. Which of the following physical quantity is unit less? A) Logarithmic decrement. B) Quality factor. C) Relaxation time. D) Both logarithmic decrement & Quality factor. Show Answer Correct Answer: D) Both logarithmic decrement & Quality factor. 4. How does phase shift affect the behavior of an oscillation? A) It changes the color of the oscillation. B) It changes the timing of the oscillation. C) It affects the size of the oscillation. D) It increases the speed of the oscillation. Show Answer Correct Answer: B) It changes the timing of the oscillation. 5. ..... is the maximum displacement from the equilibrium position A) Amplitude. B) Frequency. C) Displacement. D) None of the above. Show Answer Correct Answer: C) Displacement. 6. The periodic time of an oscillating body which makes 240 oscillations in one minute = ..... A) 0.25 sec. B) 4 sec. C) 1 sec. D) 0.5 sec. Show Answer Correct Answer: B) 4 sec. 7. A simple harmonic oscillator takes 4.8 s to undergo five complete vibrations. What is the frequency of 1cycle? A) 1.04 s. B) 4.8 s. C) 1/4.8 s. D) None of the above. Show Answer Correct Answer: A) 1.04 s. 8. The total mechanical energy of a simple harmonic oscillating system is A) A minimum when it passes through the equilibrium point. B) Zero as it passes the equilibrium point. C) A non-zero constant. D) Zero when it reaches the maximum displacement. Show Answer Correct Answer: C) A non-zero constant. 9. The period of a pendulum is 10 s. What is its frequency? A) 10 Hz. B) 0.1 Hz. C) 0.5 Hz. D) 1 Hz. Show Answer Correct Answer: B) 0.1 Hz. 10. The period of a simple pendulum will be doubled if A) Its length is increased to four times. B) The acceleration due to gravity is doubled. C) The mass of the bob is doubled. D) The length of the pendulum and mass of the bob are doubled. Show Answer Correct Answer: A) Its length is increased to four times. 11. Frieda the fly flaps her wings back and forth 100 times each second. The period of her wings flapping is: A) 100 Hz. B) 0.01 Hz. C) 0.01 s. D) 100 s. Show Answer Correct Answer: C) 0.01 s. 12. When a forced oscillation is applied to a system, what happens to the amplitude of the oscillation? A) The amplitude decreases. B) The amplitude remains unchanged. C) The amplitude increases. D) The amplitude depends on the frequency of the force. Show Answer Correct Answer: D) The amplitude depends on the frequency of the force. 13. What is simple harmonic motion? A) Periodic motion with a restoring force proportional to displacement. B) Motion that is always in a straight line. C) Motion that is not periodic. D) Motion that does not involve any force. Show Answer Correct Answer: A) Periodic motion with a restoring force proportional to displacement. 14. Waves can be categorized by the two ways they move. What are the two types of waves? A) Sound and light. B) Transverse & latitudinal. C) Transverse & longitudinal. D) Longitudinal & transcribe. Show Answer Correct Answer: C) Transverse & longitudinal. 15. Which of the following is true of a damped simple pendulum in which the amplitude of motion decreases exponentially? A) The total energy of the pendulum remains the same. B) The maximum kinetic energy decreases through time. C) Its period decreases through time. D) The maximum potential energy increases through time. Show Answer Correct Answer: B) The maximum kinetic energy decreases through time. 16. What variable affects the period of the pendulum? A) Amplitude. B) Mass. C) String length. D) All variables (amplitude, mass, and string length). Show Answer Correct Answer: C) String length. 17. The time period of a pendulum on Earth is 1.0 s. What would be the period of a pendulum of the same length on a planet with half the density but twice the radius of Earth? A) 0.5s. B) 1.4s. C) 1.0s. D) 2.0s. Show Answer Correct Answer: C) 1.0s. 18. A mass on a spring undergoes SHM. When the mass is at its maximum distance from the equilibrium position, which of the following statements about it are true? A) Its kinetic energy is a maximum. B) Its acceleration is zero. C) Its speed is zero. D) Its total mechanical energy is zero. Show Answer Correct Answer: C) Its speed is zero. 19. What curve is produced form a Acceleration vs Time graph (when the oscillator starts from rest position)? A) -Sin. B) Cos. C) Sin. D) -Cos. Show Answer Correct Answer: A) -Sin. 20. Which equation defines Elastic Potential Energy? A) U = x. B) U = 1/2 k x. C) U = 1/2 k x$^{2}$. D) U = k x. Show Answer Correct Answer: C) U = 1/2 k x$^{2}$. 21. When the mass reaches point x = 0 its instantaneous acceleration is? A) Maximum and positive. B) Zero. C) Maximum and negative. D) Slightly less than maximum and negative. Show Answer Correct Answer: B) Zero. 22. What is the unit of time? A) 1 m. B) 1 s. C) 1 J. D) 1 Hz. Show Answer Correct Answer: B) 1 s. 23. How does simple harmonic motion differ from other types of motion? A) The frequency of simple harmonic motion is not constant. B) The restoring force in simple harmonic motion is directly proportional to the displacement. C) The amplitude of simple harmonic motion is not related to the restoring force. D) Simple harmonic motion does not have a period. Show Answer Correct Answer: B) The restoring force in simple harmonic motion is directly proportional to the displacement. 24. The maximum displacement done by the oscillating body away from its original position. A) Oscillatory motion. B) Amplitude. C) Periodic time. D) Frequency. Show Answer Correct Answer: B) Amplitude. 25. The displacement equation of a simple harmonic motion of a stretched pendulum is typically given by: A) X=sinA(wt). B) X=cosA(wt). C) X=secA(wt). D) X=tanA(wt). Show Answer Correct Answer: A) X=sinA(wt). 26. Which one of the following statements is true for the speed v and the acceleration 'a' of a particle executing simple harmonic motion? A) When v is maximum, a is maximum. B) When v is zero, a is zero. C) When v is maximum, a is zero. D) Value of a is zero, whatever may be the value of v. Show Answer Correct Answer: C) When v is maximum, a is zero. 27. The variation with time t of the displacement x of a particle in simple harmonic motion form point O is given as x=5.0 sin 20t. What is the period of the simple harmonic motion? A) 0.31 s. B) 0.22 s. C) 0.050 s. D) 0.20 s. Show Answer Correct Answer: A) 0.31 s. 28. Angular velocity and frequency in simple harmonic motion are related by: A) W=2(pi)/f. B) F=w/2(pi). C) W=2(pi)f. D) F=2(pi)/w. Show Answer Correct Answer: C) W=2(pi)f. 29. A particle which is impressed by two SHMs given by x$_{1}$ = acoswt and x$_{2}$ = asinwt, then the resultant motionwill have an amplitude of A) 0. B) $\sqrt[]{2}a$. C) $\sqrt[]{3}a$. D) 2a. Show Answer Correct Answer: B) $\sqrt[]{2}a$. 30. To make the frequency double of an oscillator, we have to: A) Half the mass. B) Quadruple the mass. C) Reduce the mass to one-fourth. D) Double the mass. Show Answer Correct Answer: C) Reduce the mass to one-fourth. 31. In simple harmonic motion, when is the speed the greatest? A) When the potential energy is a maximum. B) When the potential energy is zero. C) When the displacement is a maximum. D) When the magnitude of the acceleration is a minimum. Show Answer Correct Answer: B) When the potential energy is zero. 32. Which of the following is NOT a characteristic of forced oscillation? A) The system oscillates with the frequency of the external force. B) The amplitude depends on the frequency of the external force. C) The amplitude is always maximum. D) The system can reach resonance. Show Answer Correct Answer: C) The amplitude is always maximum. 33. What's the period of a spring-mass oscillator with a mass of 3.5 kg and a spring constant of 85 N/m? A) 1.3 sec. B) 0.4 sec. C) 0.8 sec. D) 3.1 sec. E) 1.9 sec. Show Answer Correct Answer: A) 1.3 sec. 34. A simple harmonic oscillator takes 4.8 s to undergo five complete vibrations. What is the period (T) of 1 cycle? A) 4.8 s. B) .96 s. C) 9.8 s. D) None of the above. Show Answer Correct Answer: B) .96 s. 35. Two identical springs of constant k are connected, first in series and then in parallel. A metal block of mass m is suspended from their combination. The ratio of their frequencies of vertical oscillations will be in a ratio A) 1:2. B) 4:1. C) 2:1. D) 1:4. Show Answer Correct Answer: A) 1:2. 36. In a damped harmonic oscillator, periodic oscillations have ..... amplitude A) Gradually decreasing. B) Suddenly increasing. C) Suddenly decreasing. D) Gradually increasing. Show Answer Correct Answer: A) Gradually decreasing. 37. What's the frequency of a spring-mass oscillator with a spring constant of 3550 N/m and a mass of 1395 kg? A) 0.25 Hz. B) 0.16 Hz. C) 0.56 Hz. D) 0.41 Hz. E) 0.35 Hz. Show Answer Correct Answer: A) 0.25 Hz. 38. True or False:The time for a complete back-and-forth swing of a pendulum is its frequency. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 39. A block-spring system is vibrating in simple harmonic motion on a frictionless horizontal surface. The block has a mass of 0.050 kg and the force constant of the spring is 800 N m$^{-1}$. What is the frequency of the vibration? A) 20 Hz. B) 0.50 Hz. C) 30 Hz. D) 10 Hz. Show Answer Correct Answer: A) 20 Hz. 40. Which of the following is an example of free oscillation? A) Vibrating running fork in air medium. B) The springs of dead beat galvanometer. C) A particle oscillating in air medium. D) An object suspended from the spring set to vibrate in vacuum. Show Answer Correct Answer: D) An object suspended from the spring set to vibrate in vacuum. 41. What is damping in oscillations? A) Gradual decrease in the amplitude of the oscillations over time. B) Complete stoppage of the oscillations over time. C) Sudden increase in the amplitude of the oscillations over time. D) No change in the amplitude of the oscillations over time. Show Answer Correct Answer: A) Gradual decrease in the amplitude of the oscillations over time. 42. What factors affect the period of a pendulum? A) Speed, time, and distance. B) Length, gravity, and angle of displacement. C) Color, temperature, and material. D) Volume, pressure, and density. Show Answer Correct Answer: B) Length, gravity, and angle of displacement. 43. The displacement of a particle moving in simple harmonic motion is given by x=5 cos 2t where x is in centimetres and the time t in seconds. If the period of the motion is T, the acceleration of the particle at t= $\frac{T}{6}$ A) +17.3 cm $s^{-2}$. B) +10.0 cm $s^{-2}$. C) -17.3 cm $s^{-2}$. D) -10.0 cm $s^{-2}$. Show Answer Correct Answer: D) -10.0 cm $s^{-2}$. 44. A wave traveling at 340. m/s with a wavelength of 7.65 m will have a frequency of ..... A) 44.4 Hz. B) 0.0225 Hz. C) 2, 601 Hz. D) None of these. Show Answer Correct Answer: A) 44.4 Hz. 45. The path length of a body performing SHM is ..... A) Four times the amplitude of the SHM. B) Twice the amplitude of the SHM. C) Equal to the amplitude of the SHM. D) Eight times the amplitude of the SHM. Show Answer Correct Answer: B) Twice the amplitude of the SHM. 46. The period formula of a pendulum depends on: A) The mass of the pendulum bob. B) The length of the pendulum. C) The amplitude of oscillation. D) The angle of displacement. Show Answer Correct Answer: B) The length of the pendulum. 47. A spring of spring constant 30.0 N/m is attached to a mass of 1.9 kg; find the period and frequency of vibration for this system. A) 1.6 s; 0.62 Hz. B) 0.25 s; 0.0014 Hz. C) 0.43 s; 0.0072 Hz. D) None of the above. Show Answer Correct Answer: A) 1.6 s; 0.62 Hz. 48. A particle executes simple harmonic oscillation. Its amplitude is a. The period of oscillation is T. The minimum time taken by the particle to travel half of the amplitude from the equilibrium position is A) T/12. B) T/4. C) T/8. D) T/2. Show Answer Correct Answer: A) T/12. 49. Orbtial Period of a planet is A) The time in which it takes for planets to revolve around each other. B) The period of time in which a planet rotates on its axis. C) The orbital period is the time a given astronomical object takes to complete one orbit around another object. D) None of the above. Show Answer Correct Answer: C) The orbital period is the time a given astronomical object takes to complete one orbit around another object. 50. Simple harmonic motion occurs when: A) The oscillating object moves in a straight line. B) Frictional forces are absent. C) The restoring force is directly proportional to the displacement. D) The oscillating object experiences constant acceleration. Show Answer Correct Answer: C) The restoring force is directly proportional to the displacement. 51. The time period of an oscillation is the: A) Angular displacement of the oscillating object. B) Rate of oscillation. C) Maximum displacement of the oscillating object. D) Time taken for one complete oscillation. Show Answer Correct Answer: D) Time taken for one complete oscillation. 52. For a SHM, what is the shape of the graph of velocity (v) against displacement (x)? A) Circle. B) Parabola. C) Ellipse. D) Straight line. Show Answer Correct Answer: C) Ellipse. 53. How does the length of a pendulum affect its oscillation period? A) The oscillation period decreases as the length of the pendulum decreases. B) The oscillation period remains constant regardless of the length of the pendulum. C) The oscillation period increases as the length of the pendulum increases. D) The length of the pendulum has no effect on its oscillation period. Show Answer Correct Answer: C) The oscillation period increases as the length of the pendulum increases. 54. Overdamping occurs when: A) Damping is unrelated to the natural frequency of the system. B) Damping is excessive, preventing oscillation entirely. C) Damping matches the natural frequency of the system. D) Damping is insufficient to prevent oscillation. Show Answer Correct Answer: B) Damping is excessive, preventing oscillation entirely. 55. 1 db is equal to A) Factor of 1.26 in intensity. B) Factor of 10 in intensity. C) Factor of 1000 in intensity. D) Factor of $10^{2.6}$. Show Answer Correct Answer: A) Factor of 1.26 in intensity. 56. If a vibrating object takes 0.1 s to complete one oscillation, the number of complete oscillations that is made by the object during 100 s equals ..... oscillations. A) 100. B) 10000. C) 1000. D) 10. Show Answer Correct Answer: C) 1000. 57. A boy notices that 45 complete waves travel past him in ninety seconds. What is the frequency of these water waves? A) 1 Hz. B) 1m/s. C) 100 m. D) 0.5 Hz. Show Answer Correct Answer: D) 0.5 Hz. 58. A mass M is suspended from a spring of negligible mass. The spring is pulled a little and then released so that the mass executes SHM of time period T. If the mass is increased by m, the period becomes 5T/3. Then the ratio m/M is ..... A) $\frac{25}{9}$. B) $\frac{3}{5}$. C) $\frac{5}{3}$. D) $\frac{16}{9}$. Show Answer Correct Answer: D) $\frac{16}{9}$. 59. If a vibrating object makes 90 oscillations in one minute, then its frequency equals ..... A) 90. B) 0.6. C) 1.5. D) 60. Show Answer Correct Answer: C) 1.5. 60. The period of vertical oscillation of a mass-spring system is T when the spring carries a mass of 1.00 kg. What mass should be added to the 1.00 kg if the period is to be increased to 1.50 T? A) 1.25 kg. B) 1.00 kg. C) 2.00 kg. D) 0.25 kg. Show Answer Correct Answer: A) 1.25 kg. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Physics (Part Ii) Chapter 16 Oscillations Quiz 1Class 11 Physics (Part Ii) Chapter 16 Oscillations Quiz 3Class 11 Physics (Part Ii) Chapter 16 Oscillations Quiz 4Class 11 Physics (Part Ii) Chapter 11 Mechanical Properties Of Solids QuizClass 11 Physics (Part Ii) Chapter 13 Thermal Properties Of Matter QuizClass 11 Physics (Part Ii) Chapter 14 Thermodynamics QuizClass 11 Physics (Part Ii) Chapter 15 Kinetic Theory QuizClass 11 Physics (Part Ii) Chapter 17 Waves Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books