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 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 10 Oscillations And Waves Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Frequency is ..... A) The distance between two points on a wave that have the same displacement from the equilibrium. B) The time taken for one complete wave oscillation. C) The number of wave oscillations per second. D) The maximum displacement of the particles from the mean or equilibrium position. Show Answer Correct Answer: C) The number of wave oscillations per second. 2. A particle executes SHM with amplitude of 20 cm and time period of 12 s. What is the minimum time required for it to move between two points 10 cm on either side of the mean position? A) 3 s. B) 2 s. C) 4 s. D) 1 s. Show Answer Correct Answer: B) 2 s. 3. A violin string could vibrate with frequency of 1 kHz. The time period is ..... A) 0.001 s. B) 0.1 s. C) 10 s. D) 1000 s. Show Answer Correct Answer: A) 0.001 s. 4. Bernoulli's principle states that A) Pressure is transmitted equally in all directions in the fluid. B) Buoyant force is equal to the weight of fluid displaced. C) When the velocity of a fluid increases, the pressure in the fluid decreases. D) None of the above. Show Answer Correct Answer: C) When the velocity of a fluid increases, the pressure in the fluid decreases. 5. If a 30 kg mass is hung from a spring with a spring constant of 15 N/m, what will be its period? A) 8.9 s. B) 2.8 s. C) 6.3 s. D) 5.0 s. Show Answer Correct Answer: A) 8.9 s. 6. Why can't you hear an alarm going off in a vacuum chamber? A) Sound is a transverse wave and do not need a medium. B) Sound is a mechanical wave which cannot travel without a medium. C) Sound is a electromagnetic wave which can travel in vacuum. D) Sound is a longitudinal wave which can travel in vacuum. Show Answer Correct Answer: B) Sound is a mechanical wave which cannot travel without a medium. 7. What is the period of a pendulum with a length of 2.4 m (the pendulum is on Earth)? A) 1.9 sec. B) 9.3 sec. C) 3.1 sec. D) 5.1 sec. Show Answer Correct Answer: C) 3.1 sec. 8. In light damping ..... A) The amplitude of oscillations in the system gradually gets smaller each cycle. B) The system returns to its equilibrium position in a short time. C) The system returns to its equilibrium in a long time. D) The system does not return to the equilibrium. Show Answer Correct Answer: A) The amplitude of oscillations in the system gradually gets smaller each cycle. 9. When a wave strikes an object and bounces off (example echo) A) Medium. B) Reflection. C) Refraction. D) Interference. Show Answer Correct Answer: B) Reflection. 10. The frequency at which an object undergoes resonance is called the object's ..... A) Damped frequency. B) Resonant frequency. C) Polarised frequency. D) Natural frequency. Show Answer Correct Answer: B) Resonant frequency. 11. In a longitudinal wave, the particles of the medium oscillate: A) Perpendicular to the wave direction. B) Parallel to the wave direction. C) In circular paths. D) Not at all; they are stationary. Show Answer Correct Answer: B) Parallel to the wave direction. 12. A 4 kg block hangs from a spring extending it 16 cm from its unstretched position.a. What is the spring constant?b. What is the frequency of the oscillations? A) 24.5 N/m, 1.24 Hz. B) 245 N/m, 1.24 Hz. C) 24.5 N/m, 0.124 Hz. D) 245 N/m, 12.4 Hz. Show Answer Correct Answer: B) 245 N/m, 1.24 Hz. 13. A male's voice can be distinguished from a female's voice by A) Amplitude. B) Pitch. C) Wavelength. D) None of the above. Show Answer Correct Answer: B) Pitch. 14. An object undergoes forced vibrations when ..... A) The amplitude of oscillations increases in amplitude. B) It is forced to vibrate. C) It vibrates at its natural frequency. D) A periodic force is applied to it. Show Answer Correct Answer: D) A periodic force is applied to it. 15. A spring having with a spring constant 100 N m-1 is mounted on a horizontal table as shown in Fig. A mass of 2 kg is attached to the free end of the spring. The mass is then pulled sideways to a distance of 1.0 cm and released the frequency of oscillations, acceleration of the mass, and the maximum speed of the mass are respectively: A) 7.1, 0.8, 0.01. B) 8.1, 0.9, 0.03. C) 1.1, 0.5, 0.07. D) 5.1, 0.7, 0.02. Show Answer Correct Answer: C) 1.1, 0.5, 0.07. 16. What are the parts of a transverse wave? A) Compressions and rarefactions. B) Crests and troughs. C) Compressions and crests. D) Rarefactions and troughs. Show Answer Correct Answer: B) Crests and troughs. 17. The number of cycles that are completed per second is called the ..... and is measured in ..... A) Frequency, Hertz. B) Amplitude, meters. C) Period, seconds. D) Wavelength, meters. Show Answer Correct Answer: A) Frequency, Hertz. 18. A butcher puts 300 g of chopped beef in the 1 kg pan and places it on top of his scale. The scale has a spring constant of 400 N/m. What is the period of vibration of the scale? A) 0.02 s. B) 0.36 s. C) 5.5 s. D) 1.3 s. Show Answer Correct Answer: B) 0.36 s. 19. In critical damping ..... A) The amplitude of oscillations in the system gradually gets smaller each cycle. B) The system returns to its equilibrium position in a short time. C) The system returns to its equilibrium in a long time. D) The system does not return to the equilibrium. Show Answer Correct Answer: B) The system returns to its equilibrium position in a short time. 20. The maximum displacement from the equilibrium positin is called ..... of the oscillation A) Frequency. B) Period. C) Amplitude. D) None of the above. Show Answer Correct Answer: C) Amplitude. 21. What is an example of an oscillating system mentioned in the text? A) A pendulum. B) A piston in a motor car engine. C) A vibrating string. D) A swinging rope. Show Answer Correct Answer: B) A piston in a motor car engine. 22. If an oscillating object remains oscillating with a constant amplitude, this is an example of ..... A) Free oscillations. B) Equilibrium. C) Constant velocity. D) Damped oscillations. Show Answer Correct Answer: A) Free oscillations. 23. A wave has a frequency of 8 Hz and a wavelength of 4 meters. What is the velocity of the wave? A) 32 m/s. B) 2.0 m/s. C) 0.5 m/s. D) 8.0 m/s. Show Answer Correct Answer: A) 32 m/s. 24. What type of image is always formed by a plane mirror? A) Real and inverted. B) Virtual and inverted. C) Real and erect. D) Virtual and erect. Show Answer Correct Answer: D) Virtual and erect. 25. What is the definition of the period of a pendulum? A) One oscillation. B) The time taken for one oscillation. C) The time for one swing back and forth. D) Swing from A to B to A. Show Answer Correct Answer: B) The time taken for one oscillation. 26. The period of a pendulum may be decreased by ..... A) Shortening the length of pendulum. B) Moving the equilibrium point. C) Decreasing the mass of the bob. D) Increasing the mass of the bob. Show Answer Correct Answer: A) Shortening the length of pendulum. 27. Wave period means ..... A) The highest point above the rest position. B) The time taken for a full cycle of the wave. C) The maximum displacement of a point of a wave from its rest position. D) The number of waves passing a point each second. Show Answer Correct Answer: B) The time taken for a full cycle of the wave. 28. All of the following are examples of oscillatory motion except ..... A) Motion of string. B) Motion of tuning fork. C) Motion of car. D) Motion of simple pendulum. Show Answer Correct Answer: C) Motion of car. 29. A mass oscillates on a spring hanging from the ceiling that has a spring constant, k, of 200 N/m and a natural frequency of 2.5 Hz. If the speed of the mass is 3.8 m/s as it moves through its equilibrium position, what is the maximum displacement of the spring (in cm)? A) $24$. B) 24 Mathematical EquivalenceON. C) All the above. D) None of the above. Show Answer Correct Answer: A) $24$. 30. Which wave property changes when a sound wave goes from air into water? A) Frequency. B) Wavelength. C) Speed and wavelength. D) Speed and frequency. Show Answer Correct Answer: C) Speed and wavelength. 31. When an oscillating mass passes its equilibrium position the resultant force is ..... so that its acceleration is ..... A) Maximum, minimun. B) Minimum, maximun. C) Zero, zero. D) None of these. Show Answer Correct Answer: C) Zero, zero. 32. Short Answer:In a coupled oscillator system, what is the beat frequency if two oscillators have frequencies $f_1$ $f_2$ A) $|f_1-f_2|$. B) $2(f_1 + f_2)$. C) $f_1 f_2$. D) $f_1 + f_2$. Show Answer Correct Answer: A) $|f_1-f_2|$. 33. In the formula v = f $\lambda$, the letter $\lambda$ represents ..... A) Wave velocity. B) Displacement. C) Frequency. D) Wavelength. Show Answer Correct Answer: D) Wavelength. 34. The periodic time of a body executing SHM is 4 sec. After how much interval from time t= 0 its displacement will be half of its amplitude? A) 1/2 secc. B) 1/3 sec. C) 1/6 sec. D) 1/4 sec. Show Answer Correct Answer: B) 1/3 sec. 35. The second harmonic on a string fixed at both ends shows ..... A) A wavelength. B) Half a wavelength. C) Two wavelengths. D) A wavelength and a half. Show Answer Correct Answer: A) A wavelength. 36. If the amplitude of an oscillating object decreases over time, this is an example of ..... A) Deceleration. B) Free oscillations. C) Damped oscillations. D) Constant velocity. Show Answer Correct Answer: C) Damped oscillations. 37. A stiff material has a: A) High spring constant. B) Low spring constant. C) Spring constant of any value. D) Spring constant which is difficult to predict. Show Answer Correct Answer: A) High spring constant. 38. The maximum distance an object in simple harmonic motion moves from equilibrium is called the ..... A) Refraction. B) Period. C) Node. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 39. Wavelength is measured in ..... A) Metres per second. B) Hertz. C) Seconds. D) Metres. Show Answer Correct Answer: D) Metres. 40. Amplitude is ..... A) The maximum displacement of the particles from the mean or equilibrium position. B) The distance between two points on a wave that have the same displacement from the equilibrium. C) The number of wave oscillations per second. D) The position of the particles relative to the mean or equilibrium position. Show Answer Correct Answer: A) The maximum displacement of the particles from the mean or equilibrium position. 41. A certain pendulum with a 1.00 kg bob has a period of 3.50 s. What will happen to the period of the pendulum if the 1.00 kg bob is replaced by a bob with a mass of 2.00 kg? A) Need more information. B) Stays the same. C) Decrease. D) Increase. Show Answer Correct Answer: B) Stays the same. 42. What happens when two wave crests interfere in phase? A) The amplitude increases. B) Frequency increases. C) Amplitude will stay the same. D) The amplitude decreases. Show Answer Correct Answer: A) The amplitude increases. 43. Violet light has a wavelength of 410 nm. What is the frequency? A) 3.0 e8 Hz. B) 1.37 e12 Hz. C) 7.31 e14 Hz. D) 1.23 e-3 Hz. Show Answer Correct Answer: C) 7.31 e14 Hz. 44. In the Doppler Effect for sound, the observed frequency increases when: A) The source moves away from the observer. B) The observer moves away from the source. C) The source moves towards the observer. D) Both source and observer move in the same direction at the same speed. Show Answer Correct Answer: C) The source moves towards the observer. 45. A converging lens with focal length $f$ $2f$ A) At the center of the lens. B) At $f$. C) At $2f$. D) At infinity. Show Answer Correct Answer: C) At $2f$. 46. When we're talking about a pendulum, what does T stand for? A) Length. B) Gravity. C) Pi. D) Period. Show Answer Correct Answer: D) Period. 47. The pitch of a sound is related to the ..... A) Reflection of a sound wave. B) Speed of a sound wave. C) Amplitude of the sound wave. D) Frequency of the sound wave. Show Answer Correct Answer: D) Frequency of the sound wave. 48. What happens to the speed of light when it enters a denser medium from a less dense medium? A) It remains the same. B) It becomes zero. C) It decreases. D) It increases. Show Answer Correct Answer: C) It decreases. 49. A ray of light passes from air ( $n=1$ $n=1.5$ $30^\circ$ A) $19.5^\circ$. B) $48.6^\circ$. C) $45^\circ$. D) $30^\circ$. Show Answer Correct Answer: A) $19.5^\circ$. 50. What is the best type of spring to see compressions and rarefactions? A) Metal spring. B) Plastic spring. C) Hard spring. D) Soft 'slinky' spring. Show Answer Correct Answer: D) Soft 'slinky' spring. 51. A wave that oscillates in a fixed location A) Standing wave. B) Sitting wave. C) Longitudinal wave. D) Transverse wave. Show Answer Correct Answer: A) Standing wave. 52. In a system undergoing damped oscillations, what causes the oscillations to lose amplitude? A) Resonant forces. B) Damping forces. C) Dissipative forces. D) Periodic forces. Show Answer Correct Answer: C) Dissipative forces. 53. A wave in which the particles of the medium vibrate parallel to the direction of wave motion A) Transverse wave. B) Longitudinal wave. C) Standing wave. D) Sitting wave. Show Answer Correct Answer: B) Longitudinal wave. 54. What is the relationship between frequency and period? A) Frequency is half the period. B) They are unrelated. C) Frequency is double the period. D) Frequency is the inverse of period. Show Answer Correct Answer: D) Frequency is the inverse of period. 55. Jason heard a thunder 2 seconds after he saw the lightning. If the speed of sound is 300 m/s, what is the distance between Jason and the lightning? A) 600 m. B) 302 m. C) 300 m. D) 150 m. Show Answer Correct Answer: A) 600 m. 56. A wave in which the oscillation are parallel to the direction of wave travel is a ..... A) Transverse wave. B) Parallel wave. C) Longitudinal wave. D) Oscillating wave. Show Answer Correct Answer: C) Longitudinal wave. 57. The result of multiplying the frequency of an oscillating body by its periodic time equals ..... A) 1. B) $\frac{1}{2}$. C) $\frac{1}{3}$. D) $\frac{1}{4}$. Show Answer Correct Answer: A) 1. 58. Can two astronauts on Mars talk to each other without a communication device? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 59. Displacement is ..... A) The maximum displacement of the particles from the mean or equilibrium position. B) The distance between two points on a wave that have the same displacement from the equilibrium. C) The position of the particles relative to the mean or equilibrium position. D) The number of wave oscillations per second. Show Answer Correct Answer: C) The position of the particles relative to the mean or equilibrium position. 60. For a system in simple harmonic motion, which of the following is the number of cycles or vibrations in one second? A) Frequency. B) Period. C) Amplitude. D) Revolution. Show Answer Correct Answer: A) Frequency. ← 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 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