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 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 10 Oscillations And Waves Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the definition of wavelength? A) The distance between two points in a wave. B) The speed of the wave. C) The time it takes for one complete oscillation. D) The distance along the wave in its direction of travel between consecutive points where the oscillations are in phase. Show Answer Correct Answer: D) The distance along the wave in its direction of travel between consecutive points where the oscillations are in phase. 2. What is the key characteristic of energy levels in an atom? A) They are random. B) They are fixed and allowed values. C) They are always increasing. D) They are always decreasing. Show Answer Correct Answer: B) They are fixed and allowed values. 3. The period of an ocean wave is 10 s. What is its frequency? A) 0.1 Hz. B) 1 Hz. C) 0.5 Hz. D) 10 Hz. Show Answer Correct Answer: A) 0.1 Hz. 4. A wave pulse is created in a Slinky. It takes 1.5 seconds to travel the length of the Slinky. If the Slinky is 8 meters long, what is the speed of the wave? A) $5.33$. B) 5.33 Mathematical EquivalenceON. C) All the above. D) None of the above. Show Answer Correct Answer: A) $5.33$. 5. What is the effect of increasing the frequency of a wave on its wavelength? A) The wavelength remains the same. B) The wavelength doubles. C) The wavelength decreases. D) The wavelength increases. Show Answer Correct Answer: C) The wavelength decreases. 6. A 0.35kg block is attached to a spring, undergoes simple harmonic motion and has a period of 0.85s. What is the spring constant of the spring A) 3.34 N/m. B) 13.2 N/m. C) 0.95 N/m. D) 19.1 N/m. Show Answer Correct Answer: D) 19.1 N/m. 7. As the pendulum swings back and forth, its velocity is ..... A) Constant. B) Constantly decreasing. C) Constantly increasing. D) Constantly changing. Show Answer Correct Answer: D) Constantly changing. 8. TWO PARTS:A wave in Lake Michigan arrives on the shore every 5 seconds. It's period is ..... and its frequency is ..... (*Answers in that order) A) 5 seconds; 0.2 hertz. B) 5 seconds; 50 hertz. C) 0.2 seconds; 2 hertz. D) 50 seconds; 0.2 hertz. Show Answer Correct Answer: A) 5 seconds; 0.2 hertz. 9. What happens to the wavelength of light as it enters a medium with a higher refractive index? A) It remains the same. B) It increases. C) It decreases. D) It doubles. Show Answer Correct Answer: C) It decreases. 10. Which of the following is NOT a necessary condition for simple harmonic motion (SHM)? A) The frequency depends on the amplitude. B) The acceleration is directed opposite to the displacement. C) The restoring force obeys Hooke's Law. D) The acceleration is proportional to the displacement. Show Answer Correct Answer: A) The frequency depends on the amplitude. 11. True or False:Mechanical waves require a medium to propagate. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. What is the effect of refraction on the direction of a light wave? A) It bends away from the normal. B) It continues in the same direction. C) It bends towards the normal. D) It reverses direction. Show Answer Correct Answer: C) It bends towards the normal. 13. According to your lab what variable doesn't affect the period of the pendulum? A) Angle. B) Mass. C) String length. D) All variables (angle, mass, and string length). Show Answer Correct Answer: B) Mass. 14. If a guitar string has a fundamental frequency of 500 Hz, which one of the following frequencies can set the string into resonant vibration? A) 250 Hz. B) 1500 Hz. C) 1750 Hz. D) 750 Hz. Show Answer Correct Answer: B) 1500 Hz. 15. A pendulum has a time period of 0.4 s. What is its frequency? A) 2.5 Hz. B) 4.0 Hz. C) 1.0 Hz. D) 0.4 Hz. Show Answer Correct Answer: A) 2.5 Hz. 16. If you take a given pendulum to the Moon, where the acceleration of gravity is less than on Earth, the resonant frequency of the pendulum will A) Increase. B) Become zero. C) Decrease. D) Not change. Show Answer Correct Answer: C) Decrease. 17. A wave with a high frequency has ..... A) A long wavelength. B) A short wavelength. C) All the above. D) None of the above. Show Answer Correct Answer: B) A short wavelength. 18. Reflection occurs when- A) A wave bends around a barrier. B) A wave bends as it moves from one medium to another. C) The substance through which a wave can travel is moving rapidly up and down. D) When a wave strikes an object or surface and bounces off. Show Answer Correct Answer: D) When a wave strikes an object or surface and bounces off. 19. For a convex (converging) lens, where must an object be placed to form a real, inverted, and diminished image? A) Between the focal point (F) and the lens. B) At the focal point (F). C) Between F and 2F. D) Beyond 2F. Show Answer Correct Answer: D) Beyond 2F. 20. What is the phase difference between two successive nodes in a standing wave? A) 45 degrees. B) 90 degrees. C) 180 degrees. D) 0 degrees. Show Answer Correct Answer: C) 180 degrees. 21. A mass is attached to a vertical spring and bobs up and down between points A and B. Where is the object located when its velocity 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. 22. Which of the following is Frequency? A) $\frac{\text{Time Period}}{\text{Wavelength}}$. B) $\frac{\text{Time}}{\text{Oscillations}}$. C) $\frac{\text{Total number of Oscillations}}{\text{Total Time}}$. D) $\frac{\text{Amplitude}}{\text{Time}}$. Show Answer Correct Answer: C) $\frac{\text{Total number of Oscillations}}{\text{Total Time}}$. 23. Mega stands for ..... A) 100. B) 1000. C) 10 000. D) 1000 000. Show Answer Correct Answer: D) 1000 000. 24. When a pendulum swings, the highest velocity is observed ..... A) As it crosses equilibrium. B) When it is farthest from equilibrium. C) 1/2 way between the highest and lowest point. D) To be constant as the pendulum swings. Show Answer Correct Answer: A) As it crosses equilibrium. 25. Calculate the time period of a wave with a frequency of 50 Hz. A) 0.2 second. B) 5 seconds. C) 50 seconds. D) 0.02 second. Show Answer Correct Answer: D) 0.02 second. 26. The displacement x, for a particle at time t in simple harmonic motion is given by the equation, x = 10 sin 20t where x is in meters and t is in seconds. Determine the displacement at t=10 s A) 8.73 m. B) -91.3 m. C) -8.73 m. D) 91.3 m. Show Answer Correct Answer: C) -8.73 m. 27. A pendulum is observed to complete 30 full cycles in 120 seconds. Determine the period of the pendulum. A) 6 seconds. B) 4 seconds. C) 90 seconds. D) 0.25 second. Show Answer Correct Answer: B) 4 seconds. 28. One end of the rope is vibrated to produce a wave with a wavelength of .25 m. The Frequency of the wave is 3.0 Hz. What is the speed of the wave? A) 2.50 m/s. B) .75 m/s. C) 1.25 m/s. D) 3.00 m/s. Show Answer Correct Answer: B) .75 m/s. 29. What happens when a wave traveling in a medium travels around a barrier or though a narrow opening? A) Diffraction. B) Rarefaction. C) Refraction. D) Destruction. Show Answer Correct Answer: A) Diffraction. 30. Which wave travels perpendicular in relation to a medium? A) Transverse. B) Longitudinal. C) Both. D) Neither. Show Answer Correct Answer: A) Transverse. 31. Which type of wave has oscillations moving parallel to the direction the wave energy is moving? A) Longitudinal wave. B) Electromagnetic wave. C) Radio wave. D) Transverse wave. Show Answer Correct Answer: A) Longitudinal wave. 32. The bending of a wave as it changes speed in different mediums is called A) Reflection. B) Diffraction. C) Refraction. D) Interference. Show Answer Correct Answer: C) Refraction. 33. Sound waves travel as ..... waves. A) Surface. B) Electromagnetic. C) Longitudinal. D) Transverse. Show Answer Correct Answer: C) Longitudinal. 34. What happens to wave energy in reflection mode? A) It is absorbed by the grating. B) It is transmitted through the grating. C) It is lost completely. D) It is reflected back off the grating surface. Show Answer Correct Answer: D) It is reflected back off the grating surface. 35. A force of 30 N stretches a very light ideal spring 0.73 m from equilibrium. What is the force constant (spring constant) of the spring? A) 41 N/m. B) 46 N/m. C) 34 N/m. D) 22 N/m. Show Answer Correct Answer: A) 41 N/m. 36. The wavelength of a sound wave is 20m. The frequency is 5 Hz. What is the wave speed? A) 15 m/s. B) 4 m/s. C) 25 m/s. D) 100 m/s. Show Answer Correct Answer: D) 100 m/s. 37. What is the name of the mass on a pendulum? A) Bob. B) Ion. C) Oscillating mass. D) Graviton. Show Answer Correct Answer: A) Bob. 38. Which of the following is non-oscillatory in nature? A) Under damped & over damped. B) Critically damped & over damped. C) Critically damped & under damped. D) Forced oscillation & over damped. Show Answer Correct Answer: B) Critically damped & over damped. 39. Select all that apply:The intensity pattern observed in Young's double-slit experiment is due to which of the following? A) Interference. B) Reflection. C) Refraction. D) Diffraction only. Show Answer Correct Answer: A) Interference. 40. According to the equation what variable affects the period of the pendulum? A) Angle. B) Mass. C) String length. D) All variables (angle, mass, and string length). Show Answer Correct Answer: C) String length. 41. Wave is the disturbance that propagates and transfers energy ..... A) No correct answer. B) In the direction perpendicular to that of propagation. C) In the direction opposite to that of propagation. D) In the direction of propagation. Show Answer Correct Answer: D) In the direction of propagation. 42. Which statement best describes waves? A) Waves can move matter, but not energy. B) Waves are repeating patterns of motion. C) Waves are repeating patterns of motion that transfer energy. D) Waves move matter from one place to another. Show Answer Correct Answer: C) Waves are repeating patterns of motion that transfer energy. 43. Velocity of sound after Laplace's correction is A) $\sqrt{\frac{p_0}{\rho}}$. B) $\sqrt{\frac{\gamma p_0}{\rho_0}}$. C) $\frac{\gamma p_0}{\rho_0}$. D) $\sqrt{\frac{kT}{M}}$. Show Answer Correct Answer: B) $\sqrt{\frac{\gamma p_0}{\rho_0}}$. 44. Which phenomenon is best described as the spreading of waves around obstacles or through slits? A) Doppler effect. B) Refraction. C) Reflection. D) Diffraction. Show Answer Correct Answer: D) Diffraction. 45. The equation for all the possible wavelengths that can form in a standing wave in a length of string between two fixed ends is A) = 2n/L. B) = L/2n. C) = 2L/n. D) =n/2L. Show Answer Correct Answer: C) = 2L/n. 46. Match the following normal modes of two identical coupled pendulums to their descriptions:1. In-phase mode 2. Out-of-phase mode a. Both pendulums swing in the same direction with the same amplitude. b. Both pendulums swing in opposite directions with the same amplitude. A) 1-b, 2-b. B) 1-a, 2-b. C) 1-a, 2-a. D) 1-b, 2-a. Show Answer Correct Answer: B) 1-a, 2-b. 47. An oscillator completes 40 cycles in 10 seconds, what is its frequency? A) 4 hertz. B) 0.25 hertz. C) 400 hertz. D) 40 hertz. Show Answer Correct Answer: A) 4 hertz. 48. A sound wave has a frequency of $440$ $0.78$ A) $572$. B) $220$. C) $343$. D) $0.56$. Show Answer Correct Answer: C) $343$. 49. What happens when a light wave hits a mirror? A) It makes a rainbow. B) It makes a color. C) It passes through. D) It reflects. Show Answer Correct Answer: D) It reflects. 50. What is the measure of how many waves pass a point in a certain amount of time? A) Frequency. B) Wavelength. C) Midpoint. D) Crest and trough. Show Answer Correct Answer: A) Frequency. 51. A stiff ideal spring has a: A) Low spring constant. B) High spring constant. C) Spring constant which is difficult to predict. D) A varying spring constant depending on displacement. Show Answer Correct Answer: B) High spring constant. 52. Suppose that a pendulum has a period of 4.0 s at Earth's surface. If the pendulum is taken to the moon, where the acceleration due to gravity is much less than on Earth, will the pendulum's period increase, decrease, or stay the same? A) Need more information. B) Decrease. C) Increase. D) Stays the same. Show Answer Correct Answer: C) Increase. 53. A point on a standing wave that has no displacement from the rest position. A) Node. B) Period. C) Amplitude. D) Antinode. Show Answer Correct Answer: A) Node. 54. A disturbance that propagates (transfers energy from place to place) A) Medium. B) Wave. C) Oscillation. D) Period. Show Answer Correct Answer: B) Wave. 55. A pendulum is 0.75 meters long and has a period of 4.17 seconds. The Pendulum is on an unknown planet. (a) What is the gravity of the Unknown Planet?(b) What is the angular frequency of the pendulum?(c) Determine the acceleration and velocity of the pendulum at the equilibrium position A) $1.7$. B) 1.7 Mathematical EquivalenceON. C) All the above. D) None of the above. Show Answer Correct Answer: A) $1.7$. 56. What is the maximum acceleration of a platform that vibrates with an amplitude of 2.20cm at a frequency of 6.60 Hz? A) 0.378 m/s$^{2}$. B) 3.78 m/s$^{2}$. C) 378 m/s$^{2}$. D) 37.8 m/s$^{2}$. Show Answer Correct Answer: D) 37.8 m/s$^{2}$. 57. Maximum displacement from equilibrium position is called A) Crest. B) Amplitude. C) Trough. D) Equilibrium. Show Answer Correct Answer: B) Amplitude. 58. Why is a theater floor carpeted and walls and ceilings covered with fabric instead of painted walls? A) To reduce reflection and interference. B) To increase the interference of sound waves. C) To reduce diffraction. D) To reduce reflection only. Show Answer Correct Answer: A) To reduce reflection and interference. 59. Two simple harmonic oscillators of mass 12 gram and 48 gram oscillate separately under the action same restoring force. The ratio of their frequencies is A) 2:1. B) 1:2. C) 1:4. D) 4:1. Show Answer Correct Answer: A) 2:1. 60. Bunyi pantulan yang terjadi hampir bersamaan dengan bunyi asli dan terdengar saling bertumpuk disebut dengan ..... A) Akustik. B) Feedback. C) Gaung. D) Gema. Show Answer Correct Answer: C) Gaung. ← 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 2Class 11 Physics (Part I) Chapter 10 Oscillations And Waves Quiz 3Class 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