This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part Ii > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The speed of the wave does not depend on the properties of the medium A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 2. What is black body radiation? A) Electromagnetic radiation emitted by a perfect black body. B) The light absorbed by a black surface. C) The radiation emitted by a black hole. D) The heat generated by a black object. Show Answer Correct Answer: A) Electromagnetic radiation emitted by a perfect black body. 3. When you squeeze the coils of a spring together, you cause a ..... A) Compression. B) Rarefaction. C) Refraction. D) Diffraction. Show Answer Correct Answer: A) Compression. 4. In the electromagnetic spectrum, what type of wave has the shortest wavelength? A) Microwaves. B) X-Rays. C) Radio Waves. D) Gamma Rays. Show Answer Correct Answer: D) Gamma Rays. 5. What causes sound waves? A) Light waves. B) Gravity. C) Vibrations. D) Heat. Show Answer Correct Answer: C) Vibrations. 6. What is the formula for calculating the wave PERIOD? A) T=1/f. B) F=N/t. C) V=f * Lambda. D) V=d/t. Show Answer Correct Answer: A) T=1/f. 7. Which object would be best to model a longitudinal wave? A) Rope. B) Slinky. C) Bridge. D) Water bottles. Show Answer Correct Answer: B) Slinky. 8. What does the amplitude of a sound wave tell you? A) How high or low pitched the sound is. B) The volume of the sound. C) When you get amped up. D) None of the above. Show Answer Correct Answer: B) The volume of the sound. 9. The trough of a wave is: A) The lowest point of the wave. B) The highest point of the wave. C) The time of one wavelength. D) The distance between two successive crests. Show Answer Correct Answer: A) The lowest point of the wave. 10. What kind of wave can travel through empty space? A) Electromagnetic. B) Mechanical. C) Ocean. D) Sound. Show Answer Correct Answer: A) Electromagnetic. 11. How is "speed" related to waves, and what units are commonly used to express wave speed? A) Speed is independent of waves. B) Speed = Amplitude x Frequency; Hz. C) Speed = Wavelength/Frequency; m/s. D) Speed = Frequency x Wavelength; m/s. Show Answer Correct Answer: D) Speed = Frequency x Wavelength; m/s. 12. Which type of wave is characterized by compression and expansion? A) Pulse wave. B) Longitudinal wave. C) Continuous wave. D) Transverse wave. Show Answer Correct Answer: B) Longitudinal wave. 13. What is the energy in electron volts of a photon of ultra violet light of frequency 7.9 x 10$^{14}$Hz? A) 37.9 x 10$^{4}$ eV. B) 8.38 x 10$^{-38}$eV. C) 3.27eV. D) 1.48 eV. Show Answer Correct Answer: C) 3.27eV. 14. What is the frequency of a wave that has a period of $2.11\min$ A) $7.9\times10^{-3}Hz$. B) $2.70Hz$. C) $127Hz$. D) $0.474Hz$. Show Answer Correct Answer: A) $7.9\times10^{-3}Hz$. 15. For destructive interference, the path difference is: A) Odd number of half wavelengths. B) Even number of half wavelengths. C) Even whole number of wavelengths. D) Whole number of wavelengths. Show Answer Correct Answer: A) Odd number of half wavelengths. 16. The period of a harmonic oscillator is A) One cycle of motion. B) The maximum displacement of the oscillator. C) The number of cycles the oscillator makes per second. D) The time the oscillator takes to complete one cycle. Show Answer Correct Answer: D) The time the oscillator takes to complete one cycle. 17. In a Young's double slit experiment, green light isincident on the two slits. The interference pattern isobserved on a screen. Which one of the followingchanges would cause the fringes to be more closelyspaced? A) Use red light instead of green light. B) Reduce the slit separation distance. C) Use blue light instead of green light. D) Move the screen farther away from the slits. Show Answer Correct Answer: C) Use blue light instead of green light. 18. What is resonance in the context of standing waves? A) Resonance occurs when the amplitude of a standing wave decreases. B) Resonance in standing waves is when the natural frequency of an object matches the frequency of an external force, leading to a significant increase in amplitude. C) Resonance is unrelated to the frequency of the external force. D) Resonance is only observed in transverse waves. Show Answer Correct Answer: B) Resonance in standing waves is when the natural frequency of an object matches the frequency of an external force, leading to a significant increase in amplitude. 19. A wave on a string has a frequency of 5 Hz and a wavelength of 2 meters. What is the speed of the wave? A) 2.5 m/s. B) 10 m/s. C) 5 m/s. D) 20 m/s. Show Answer Correct Answer: B) 10 m/s. 20. In a demonstration, a vibrating tuning fork causes a nearby second tuning fork to begin to vibrate with the same frequency. Which wave phenomenon is illustrated by this demonstration? A) Resonance. B) Interference. C) Nodes. D) Doppler effect. Show Answer Correct Answer: A) Resonance. 21. Which of the following is an example of a transverse wave? A) Sound wave. B) Light wave. C) Water wave. D) All of the above. Show Answer Correct Answer: B) Light wave. 22. The bending of a wave around a barrier is ..... A) Comression. B) Sonar. C) Waves. D) Diffraction. Show Answer Correct Answer: D) Diffraction. 23. What occurs when a wave's amplitude is tripled? A) Energy triples. B) Energy doubles. C) Energy increases nine times. D) Energy increases six times. Show Answer Correct Answer: C) Energy increases nine times. 24. Where does a pendulum have maximum kinetic energy? A) Equilibrium. B) Between equilibrium and highest amplitude moving down. C) Highest amplitude on either side of equilibrium. D) Between equilibrium and highest amplitude moving up. Show Answer Correct Answer: A) Equilibrium. 25. ..... is made when something vibrates A) Light. B) Pounding. C) Sound. D) Drum. Show Answer Correct Answer: C) Sound. 26. How does gamma ray affect the body in excessive quantities? A) Skin burns. B) Damage to surface cells and blindness. C) Internal heating of body tissue. D) Cancer, mutation. Show Answer Correct Answer: D) Cancer, mutation. 27. The distance between two consecutive crests or troughs is the A) Period. B) Wavelength. C) Amplitude. D) Frequency. Show Answer Correct Answer: B) Wavelength. 28. Which of the following best describes a standing wave? A) A wave that travels through a medium without reflection. B) A wave that is confined to a space and appears to be stationary. C) A wave that loses energy as it travels. D) A wave that changes frequency over time. Show Answer Correct Answer: B) A wave that is confined to a space and appears to be stationary. 29. What can electromagnetic waves travel through? A) Mediums. B) Empty space. C) Solely solids. D) Both mediums and empty space. Show Answer Correct Answer: D) Both mediums and empty space. 30. The loudness of a sound is related to its A) Frequency. B) Amplitude. C) Speed. D) Wavelength. Show Answer Correct Answer: B) Amplitude. 31. What term describes sound waves bending around the edges of an opening? A) Transmitted waves. B) Sound Diffraction. C) Reflection. D) Absorption. Show Answer Correct Answer: B) Sound Diffraction. 32. The highest point on a wave is: A) The crest. B) The trough. C) The top. D) The coast. Show Answer Correct Answer: A) The crest. 33. What is the effect of increasing amplitude on a wave? A) The wave's speed increases, causing it to travel faster. B) The wave's energy increases, resulting in greater intensity. C) The wave's wavelength shortens, resulting in a higher tone. D) The wave's frequency decreases, leading to lower pitch. Show Answer Correct Answer: B) The wave's energy increases, resulting in greater intensity. 34. When you shake a rope up and down, you create a ..... wave. A) Transverse. B) Compressional. C) Seismic. D) None of the above. Show Answer Correct Answer: A) Transverse. 35. What are the points called where there is no movement in a standing wave? A) Nodes. B) Troughs. C) Peaks. D) Antinodes. Show Answer Correct Answer: A) Nodes. 36. Which property of waves determines the color of light? A) Wavelength. B) Amplitude. C) Frequency. D) Speed. Show Answer Correct Answer: A) Wavelength. 37. What is the speed of a wave with a frequency of 500 Hz and a wavelength of 2 meters? A) 2000 m/s. B) 500 m/s. C) 250 m/s. D) 1000 m/s. Show Answer Correct Answer: D) 1000 m/s. 38. The frequency of a wave is determined by: A) How long the wavelength travels. B) How low the troughs dip. C) How high the peaks rise. D) How many full cycles per unit time. Show Answer Correct Answer: D) How many full cycles per unit time. 39. The wave of energy we can see is ..... A) Microwaves. B) Radio waves. C) X-rays. D) Visible light. Show Answer Correct Answer: D) Visible light. 40. Which feature of sound is determined by amplitude? A) Pitch. B) Smoothness. C) Loudness. D) None of the above. Show Answer Correct Answer: C) Loudness. 41. It is a disturbance that travels through a medium or space. A) Wave. B) Crest. C) Vibration. D) Trough. Show Answer Correct Answer: A) Wave. 42. What is a mechanical wave? A) A wave that requires a medium through which to travel like gas, liquid or solid. B) A wave that does not need a medium to travel through like moving through the vacuum of space. C) All the above. D) None of the above. Show Answer Correct Answer: A) A wave that requires a medium through which to travel like gas, liquid or solid. 43. X-rays are used in hospitals mainly because they: A) Pass through soft tissue but not bone. B) Have very long wavelengthsAnswer:C. C) Cause fluorescence in gases. D) Are absorbed strongly by soft tissue. Show Answer Correct Answer: A) Pass through soft tissue but not bone. 44. Sound waves would travel fastest through: A) A swimming pool. B) The Air. C) Lake Michigan. D) A steel bridge. Show Answer Correct Answer: D) A steel bridge. 45. Extra distance travelled by one of waves compared with other is called A) Path. B) Displacement. C) Phase difference. D) Path difference. Show Answer Correct Answer: D) Path difference. 46. Which phenomenon explains the spreading of light from a doorway to illuminate a room? A) Diffraction. B) Absorption. C) Reflection. D) Refraction. Show Answer Correct Answer: A) Diffraction. 47. A louder sound has A) No energy. B) The same energy. C) More energy. D) Less energy. Show Answer Correct Answer: C) More energy. 48. Which wave characteristic is the same for all types of electromagnetic radiation traveling in a vacuum? A) Wavelength. B) Frequency. C) Period. D) Speed. Show Answer Correct Answer: D) Speed. 49. What is the primary factor that determines whether a wave will be transmitted, reflected, or refracted when it encounters a boundary between two media? A) Wavelength. B) Amplitude. C) Frequency. D) Velocity. Show Answer Correct Answer: A) Wavelength. 50. Which of the following affects the period of a pendulum? A) Length of the string. B) Shape of the mass on the string. C) Mass. D) Tension of the string. Show Answer Correct Answer: A) Length of the string. 51. Select the units for radiation risk. A) Metres. B) Joules. C) Newtons. D) Sieverts. Show Answer Correct Answer: D) Sieverts. 52. What determines the amplitude of a mechanical wave? A) Amount of energy. B) Wavelength. C) Frequency. D) Speed of wave. Show Answer Correct Answer: A) Amount of energy. 53. When a sound source is moving towards you, what happens to the pitch of the sound you hear due to the Doppler Effect? A) It remains the same. B) It becomes louder. C) It increases. D) It decreases. Show Answer Correct Answer: C) It increases. 54. The Moon is 380 000 km from the Earth. A laser light beam is directed from the Earth to theMoon. The beam is reflected back to the Earth.How long does it take for the light to travel to the Moon and back to the Earth? A) 1.27 s. B) 2.53 s. C) 2.53 ms. D) 100 s. E) 1.27 ms. Show Answer Correct Answer: B) 2.53 s. 55. What is superposition in wave theory? A) Superposition is the phenomenon of waves reflecting off surfaces. B) Superposition refers to the speed of a wave in a medium. C) Superposition is the process of waves canceling each other out. D) Superposition is the principle that the resultant wave is the sum of overlapping waves. Show Answer Correct Answer: D) Superposition is the principle that the resultant wave is the sum of overlapping waves. 56. Explain the Doppler effect in sound waves. A) The Doppler effect is unrelated to the position of the observer. B) The Doppler effect only occurs with light waves. C) The Doppler effect is the change in speed of sound waves regardless of motion. D) The Doppler effect is the change in frequency or wavelength of sound waves due to the relative motion between the source and the observer. Show Answer Correct Answer: D) The Doppler effect is the change in frequency or wavelength of sound waves due to the relative motion between the source and the observer. 57. Do light waves need a medium to travel through? A) NO. B) YES. C) All the above. D) None of the above. Show Answer Correct Answer: A) NO. 58. Define the law of reflection. A) The law of reflection states that light cannot be reflected. B) The law of reflection states that the angle of incidence is always greater than the angle of reflection. C) The law of reflection states that light travels in a straight line without changing direction. D) The law of reflection states that the angle of incidence is equal to the angle of reflection. Show Answer Correct Answer: D) The law of reflection states that the angle of incidence is equal to the angle of reflection. 59. If a wave has a greater frequency, what happens to number of waves per second? A) Increases. B) Decreases. C) Stays the same. D) None of the above. Show Answer Correct Answer: A) Increases. 60. The term used to describe the frequency of a musical note. A) Amplitude. B) Wavelength. C) Frequency. D) Pitch. Show Answer Correct Answer: D) Pitch. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Physics (Part Ii) Chapter 17 Waves Quiz 1Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 2Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 3Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 4Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 5Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 6Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 7Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books