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 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 10 Oscillations And Waves Quiz 5 (50 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The acceleration of a particle in SHM is: A) Maximum at the equilibrium position. B) Maximum at amplitude. C) Always constant. D) Always zero. Show Answer Correct Answer: B) Maximum at amplitude. 2. As a pendulum gets longer, what happens to the period? A) Doesn't change. B) Decreases. C) Increases. D) None of the above. Show Answer Correct Answer: C) Increases. 3. An oscillatory system is critically damped. Which statement is true? A) The amplitude of oscillation decreases exponentially. B) The displacement decreases to zero in a short time. C) Energy dissipates from the system linearly with time. D) The system takes a long time to come to rest. Show Answer Correct Answer: B) The displacement decreases to zero in a short time. 4. When an object undergoes resonance, its ..... A) Amplitude decreases each cycle. B) Frequency decreases each cycle. C) Amplitude increases each cycle. D) Frequency increases each cycle. Show Answer Correct Answer: C) Amplitude increases each cycle. 5. What is the amplitude at the nodes of a stationary wave? A) Minimum. B) Variable. C) Constant. D) Maximum. Show Answer Correct Answer: A) Minimum. 6. A pendulum swings 5 times in a second. What is its frequency? A) 0.5 s. B) 5.0 s. C) 1.0 s. D) 0.2 s. Show Answer Correct Answer: D) 0.2 s. 7. An object that has a small mass that is suspended from a wire or string A) Oscillation. B) Simple pendulum. C) Wave. D) Frequency. Show Answer Correct Answer: B) Simple pendulum. 8. A wave has a frequency of 8 Hz and a wavelength of 4 meters. What is the period of the wave? A) 2 m. B) 0.125 sec. C) 0.5 sec. D) 16 sec. Show Answer Correct Answer: B) 0.125 sec. 9. Un corpo attaccato a una molla oscilla con un periodo uguale a T. Se sostituisci il corpo con uno di massa doppia, il periodo dell'oscillazione diventa: A) 2T. B) Nessuno dei precedenti. C) T. D) 1/2 T. Show Answer Correct Answer: B) Nessuno dei precedenti. 10. Determine the mass of a bob hanging from a spring of constant 10 N/m that takes 2.6 s to oscillate. A) 2.01 kg. B) 1.0 kg. C) 0.68 kg. D) 1.68 kg. Show Answer Correct Answer: D) 1.68 kg. 11. Waves are a transfer of what? A) Light. B) Food. C) Energy. D) Heat. Show Answer Correct Answer: C) Energy. 12. Inversion occurs when a wave reflects off ..... A) A fixed end, and the wave amplitude changes sign. B) A loose end, and the wave amplitude changes sign. C) A fixed end without the wave amplitude changing sign. D) A loose end without the wave amplitude changing sign. Show Answer Correct Answer: A) A fixed end, and the wave amplitude changes sign. 13. Pendulum "A" is on Jupiter Pendulum "B" is on the Moon. The Moon has less acceleration of gravity than Jupiter the pendulums have the same mass and length. Which Pendulum is moving faster? A) Pendulum A. B) Pendulum B. C) Both pendulum A & B are the same. D) None of the above. Show Answer Correct Answer: A) Pendulum A. 14. What kind of wave can travel through space? A) Transverse waves. B) Compressional waves. C) Longitudinal waves. D) Electromagnetic waves. Show Answer Correct Answer: D) Electromagnetic waves. 15. A student in a band notices that a drum vibrates when another instrument emits a certain frequency note. This phenomenon illustrates A) Free oscillation. B) Underdamping. C) Resonance. D) Overdamping. Show Answer Correct Answer: C) Resonance. 16. Which of the following is NOT a consequence of the wave nature of light? A) Interference. B) Polarization. C) Rectilinear propagation. D) Diffraction. Show Answer Correct Answer: C) Rectilinear propagation. 17. For a damped driven harmonic oscillator, the frequency at which the amplitude is maximum is A) Zero. B) Greater than the natural frequency of oscillation. C) Less than the natural frequency of oscillation. D) Equal to the natural frequency of oscillation. Show Answer Correct Answer: C) Less than the natural frequency of oscillation. 18. When does the pendulum reaches its maximum velocity? A) It is at rest. B) At its highest point. C) At its lowest point. D) It moves at a constant velocity. Show Answer Correct Answer: C) At its lowest point. 19. Period is measured in ..... A) Hertz. B) Metres per second. C) Seconds. D) Metres. Show Answer Correct Answer: C) Seconds. 20. Which of the following expressions correctly gives the period $T$ $m$ $k$ A) $T = 2\pi \sqrt{\frac{m}{k}}$. B) $T = 2\pi \sqrt{mk}$. C) $T = 2\pi \sqrt{\frac{k}{m}}$. D) $T = \pi \sqrt{\frac{m}{k}}$. Show Answer Correct Answer: A) $T = 2\pi \sqrt{\frac{m}{k}}$. 21. The range audiosonic frequency is ..... A) 10-10 000 Hz. B) 20-20 000 Hz. C) 20-2000 Hz. D) 20-10 000 Hz. Show Answer Correct Answer: B) 20-20 000 Hz. 22. What is the equation for frequency? A) F = t/n. B) F = 1/T. C) F = 2 T. D) None of the above. Show Answer Correct Answer: B) F = 1/T. 23. If an AM radio station broadcasts at 995 kHz, what is the wavelength of this radiation? (Convert to Hz first). A) 3.32 e-3 m. B) 301 m. C) 1.01 e-6 m. D) 6.59 e-28 m. Show Answer Correct Answer: B) 301 m. 24. Short Answer:A string of length $L$ A) $\frac{L}{2}$. B) $2L$. C) $L$. D) $4L$. Show Answer Correct Answer: B) $2L$. 25. What happens when electromagnetic radiation passes through a polarising filter? A) All components are absorbed. B) Components oscillating in the plane at 90$^\circ$ to the filter are removed. C) The intensity of light is increased. D) The frequency of light is doubled. Show Answer Correct Answer: B) Components oscillating in the plane at 90$^\circ$ to the filter are removed. 26. How do you measure the wavelength of a longitudinal wave? A) It does not have a wavelength. B) Middle of compression to middle of next compression. C) You cannot measure the wavelength. D) Crest to crest. Show Answer Correct Answer: B) Middle of compression to middle of next compression. 27. What is the purpose of drawing a normal line in refraction experiments? A) To measure the speed of light. B) To determine the angle of incidence and refraction. C) To calculate the density of the medium. D) To reflect light back into the medium. Show Answer Correct Answer: B) To determine the angle of incidence and refraction. 28. The number of waves passing a point each second is ..... A) Wavelength. B) Frequency. C) Longitudinal waves. D) Period. Show Answer Correct Answer: B) Frequency. 29. Frequency is measured in ..... A) Metres per second. B) Metres. C) Hertz. D) Seconds. Show Answer Correct Answer: C) Hertz. 30. What is the period of a simple pendulum of length 1.0 m? What should be its length forthe period to be tripled in value? A) 3 s, 6 m. B) 3 s, 9 m. C) 2 s, 9 m. D) 2 s, 8 m. Show Answer Correct Answer: C) 2 s, 9 m. 31. Position at which the body would come to rest if it were to lose all of its energy refers to A) Periodic position. B) Equilibrium position. C) Maximum displacement / amplitude. D) Good position. Show Answer Correct Answer: B) Equilibrium position. 32. What is the phase difference between two points separated by a distance $\lambda/2$ $\lambda$ A) $\pi$. B) $2\pi$. C) $0$. D) $\pi/2$. Show Answer Correct Answer: A) $\pi$. 33. When a wave passes from one medium into another where its speed is different, the wave changes direction. This phenomenon is called: A) Refraction. B) Reflection. C) Interference. D) Diffraction. Show Answer Correct Answer: A) Refraction. 34. What is the term for the bending of waves around obstacles? A) Reflection. B) Diffraction. C) Refraction. D) Interference. Show Answer Correct Answer: B) Diffraction. 35. For a system in simple harmonic motion, which of the following is the number of cycles or vibrations per unit of time? A) Revolution. B) Amplitude. C) Period. D) Frequency. Show Answer Correct Answer: D) Frequency. 36. The number of wavelengths that pass a point each per second is: A) Longitudinal. B) Transverse wave. C) Frequency. D) Period. Show Answer Correct Answer: C) Frequency. 37. Pendulum "A" is on Jupiter Pendulum "B" is on the Moon. The Moon has less acceleration of gravity than Jupiter the pendulums have the same mass and length. Which Pendulum has the greater period? A) Pendulum A. B) Pendulum B. C) Both pendulum A & B are the same. D) None of the above. Show Answer Correct Answer: B) Pendulum B. 38. How are mechanical waves different from electromagnetic waves? A) Mechanical waves are always transverse. B) Electromagnetic waves require a physical medium. C) Electromagnetic waves cannot exhibit interference. D) Mechanical waves require a physical medium to propagate. Show Answer Correct Answer: D) Mechanical waves require a physical medium to propagate. 39. A human heart beats 75 times in one minute. What is its frequency? A) 0.8 Hz. B) 75 Hz. C) 60 Hz. D) 1.25 Hz. Show Answer Correct Answer: D) 1.25 Hz. 40. Which of the following is/ are characteristics of simple harmonic motion?I. The acceleration is constant .II. The restoring force is proportional to the displacement.III. The frequency is independent of the amplitude. A) II only. B) I and II only. C) I and III only. D) II and III only. E) I, II, and III. Show Answer Correct Answer: D) II and III only. 41. The frequency is measured by a unit called ..... A) Decibel. B) Watt / m. C) Hertz. D) M /sec. Show Answer Correct Answer: C) Hertz. 42. By what factor should the length of a simple pendulum be changed in order to triple the period of vibration? A) 3. B) 9. C) 27. D) 6. Show Answer Correct Answer: B) 9. 43. Jovian screams near a canyon and can hear his echo 3 seconds later. If the speed of sound at that time is 300 m/s, what is the distance between Jovian and the canyon> A) 300 m. B) 150 m. C) 100 m. D) 900 m. Show Answer Correct Answer: D) 900 m. 44. If a simple harmonic oscillator has a displacement of 0.02 m and acceleration equal to 2.00 m s$^{-2}$, the angular frequency is equal to: A) 1.00 rad s$^{-1}$. B) 0.10 rad s$^{-1}$. C) 100 rad s$^{-1}$. D) 10.0 rad s$^{-1}$. Show Answer Correct Answer: D) 10.0 rad s$^{-1}$. 45. For a system in simple harmonic motion, which of the following is the time required to complete a cycle of motion? A) Revolution. B) Period. C) Frequency. D) Amplitude. Show Answer Correct Answer: B) Period. 46. The maximum displacement of a point of a wave from its rest position or equilibrium point is called ..... A) Frequency. B) Amplitude. C) Period. D) Crests. Show Answer Correct Answer: B) Amplitude. 47. The maximum displacement made by oscillating body away from its rest position is ..... A) Periodic time. B) Complete oscillation. C) Amplitude. D) Frequency. Show Answer Correct Answer: C) Amplitude. 48. The total mechanical energy of a simple harmonic oscillator is A) Zero as it passes the equilibrium point. B) A minimum when it passes through the equilibrium point. C) A maximum when it passes through the equilibrium point. D) Zero when it reaches the maximum displacement. E) Constant. Show Answer Correct Answer: E) Constant. 49. Which wave travels parallel in relation to a medium? A) Transverse. B) Longitudinal. C) Both. D) Neither. Show Answer Correct Answer: B) Longitudinal. 50. A sound source approaches a stationary observer. The frequency heard by the observer is ..... A) Lower than the source. B) Higher than the source. C) Equal to zero. D) The same as that of the source. Show Answer Correct Answer: B) Higher than the source. ← PreviousRelated 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 4Class 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