This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part Ii > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 13 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What does 1 Sievert equal? A) 10000 millisierverts. B) 1 millisieverts. C) 1000 millisieverts. D) 10 millisieverts. Show Answer Correct Answer: C) 1000 millisieverts. 2. What type of lens is used in a magnifying glass? A) Concave lens. B) Convex lens. C) Bifocal lens. D) Cylindrical lens. Show Answer Correct Answer: B) Convex lens. 3. As a wave's energy increases its amplitude increases A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. What is the term for the lowest point on a wave? A) Trough. B) Medium. C) Crest. D) Frequency. Show Answer Correct Answer: A) Trough. 5. Sound is able to travel faster in solids than in air because the molecules in a solid are A) Closer together than air molecules. B) Moving faster than air moleculesmoving faster than air molecules. C) Larger than air molecules. D) More easily moved than air molecules. Show Answer Correct Answer: A) Closer together than air molecules. 6. EM waves in which our eyes are sensitive to A) Light. B) Infrared. C) Gamma ray. D) Ultraviolet. Show Answer Correct Answer: A) Light. 7. What is the medium in terms of wave propagation? A) Material through which a mechanical wave moves. B) The measurement of wave speed. C) The highest point of a wave. D) The initial point of a wave. Show Answer Correct Answer: A) Material through which a mechanical wave moves. 8. How does a longitudinal wave tend to move? A) Back and forth. B) Up and down. C) All the above. D) None of the above. Show Answer Correct Answer: A) Back and forth. 9. How do sound waves create differences in air pressure? A) By electromagnetic fields. B) By chemical reactions. C) By particle displacement. D) By thermal expansion. Show Answer Correct Answer: C) By particle displacement. 10. This wave is used in long distance communication. A) Radiowaves. B) Infrared Radiation. C) Visible Light. D) Microwaves. Show Answer Correct Answer: A) Radiowaves. 11. What phenomenon only occurs with transverse waves? A) Diffraction. B) Refraction. C) Polarization. D) Reflection. Show Answer Correct Answer: C) Polarization. 12. How does diffraction occur with waves? A) Diffraction occurs when waves reflect off surfaces at an angle. B) Diffraction occurs when waves bend and spread as they pass through an opening or around obstacles. C) Diffraction happens when waves collide and cancel each other out. D) Diffraction is the process of waves amplifying as they travel through a medium. Show Answer Correct Answer: B) Diffraction occurs when waves bend and spread as they pass through an opening or around obstacles. 13. Which statement best describes how waves carry energy? A) Energy moves from one place to another through the wave. B) Energy increases as it moves through the wave. C) Energy is completely consumed by the beginning of the wave. D) Energy builds through the wave and is released at the end. Show Answer Correct Answer: A) Energy moves from one place to another through the wave. 14. Eyeglasses bend light rays so they focus on your retina and you see clearly. This bending of light is called A) Diffraction. B) Reflection. C) Refraction. D) Interference. Show Answer Correct Answer: C) Refraction. 15. When green and red light are shone in one place the resulting colour is A) White. B) Red. C) Green. D) Yellow. Show Answer Correct Answer: D) Yellow. 16. Which electromagnetic wave is responsible for cell phones? A) Xray. B) Microwaves. C) Radio. D) Gamma. Show Answer Correct Answer: C) Radio. 17. Longest wavelength in the visible light spectrum. A) Gamma. B) Violet. C) Radio. D) Red. Show Answer Correct Answer: D) Red. 18. Which device is commonly used to detect objects located underwater by using high-frequency sound waves? A) Sonar. B) Amplifier. C) Radar. D) Microphone. Show Answer Correct Answer: A) Sonar. 19. The speed at which a wave travels through a medium A) Frequency. B) Wavespeed. C) Wavelength. D) Amplitude. Show Answer Correct Answer: B) Wavespeed. 20. What is a medium? A) Something between a small and a large?. B) The substance through which a wave can travel. C) A pattern of vibration that simulates when a wave is standing still. D) The distance from any point on a wave to an identical point on the next wave. Show Answer Correct Answer: B) The substance through which a wave can travel. 21. What does "compression" refer to in a longitudinal wave? A) The reduction in wave frequency. B) The part where wave particles are spread apart. C) The bending of the wave. D) The part where wave particles of the medium are close together. Show Answer Correct Answer: D) The part where wave particles of the medium are close together. 22. The densest part of a longitudinal wave is called a A) Transform. B) Amplitude. C) Compression. D) Rarefaction. Show Answer Correct Answer: C) Compression. 23. Which of the following is a characteristic of a longitudinal wave? A) Particles move parallel to the wave direction. B) Particles move perpendicular to the wave direction. C) Wave can travel through a vacuum. D) Wave speed is independent of the medium. Show Answer Correct Answer: A) Particles move parallel to the wave direction. 24. Imagine one end of a rope is tied to a door handle. The other end is caused to vibrate vertically(up & down). The wave that travels along the rope is an example of a(n) ..... A) Electromagnetic Wave. B) Microwave. C) Transverse Wave. D) Longitudinal Wave. Show Answer Correct Answer: C) Transverse Wave. 25. Which of the following is a measure of the number of complete waves that pass a point in a certain amount of time? A) Velocity. B) Frequency. C) Amplitude. D) Wavelength. Show Answer Correct Answer: B) Frequency. 26. Which of the following best describes the phenomenon of diffraction? A) The bending of waves around obstacles. B) The change in direction of waves as they pass from one medium to another. C) The increase in amplitude of a wave. D) The superposition of two or more waves. Show Answer Correct Answer: A) The bending of waves around obstacles. 27. When is the conduction current the same as the displacement current? A) When the source is dc. B) When the source is ac. C) When the source is neither dc nor ac. D) When the source is either an ac or a dc. Show Answer Correct Answer: B) When the source is ac. 28. What is refraction? A) When lights hides. B) When light bends or changes direction. C) When light bounces off water. D) None of the above. Show Answer Correct Answer: B) When light bends or changes direction. 29. What type of EM radiation is utilized in treating cancer, using its high energy to destroy the cells in a tumour? A) X-ray. B) Gamma ray. C) Microwave. D) Visible light. Show Answer Correct Answer: B) Gamma ray. 30. Which of the following is an example of a longitudinal mechanical wave A) Sound. B) A vibrating guitar string. C) X-Rays. D) Visible light. Show Answer Correct Answer: A) Sound. 31. Wave A is being decreased in temperature, and Wave B is moving from a liquid to a gas medium. Which statement can be made about both waves? A) They will speed up. B) They will decrease the density of their medium. C) They will slow down. D) They will increase the density of their medium. Show Answer Correct Answer: C) They will slow down. 32. What is the term for energy that travels from the sun and moves through space at the speed of light? A) Surface waves. B) Radiation. C) Ultraviolet. D) Scattering. Show Answer Correct Answer: B) Radiation. 33. The points on the standing wave with the minimum, usually zero amplitude. A) Amplitudes. B) Harmonics. C) Antinodes. D) Nodes. Show Answer Correct Answer: D) Nodes. 34. The medium through which a mechanical wave passes can be a solid, a liquid, or a gas. Properties of a wave might change when it moves from one medium to another. What happens to the speed of a wave when it moves from a gas to a solid? A) It speeds up. B) It slows down. C) It remains the same. D) It speeds up and then slows. Show Answer Correct Answer: A) It speeds up. 35. The time interval required for two identical points of adjacent waves to pass by a point. A) Wavelength $\left(\lambda\right)$. B) Period $\left(T\right)$. C) Amplitude $\left(A\right)$. D) Frequency $\left(f\right)$. Show Answer Correct Answer: B) Period $\left(T\right)$. 36. Explain how waves are transmitted through different mediums. A) By causing the medium to solidify. B) By creating a vacuum in the medium. C) By changing the color of the medium. D) Causing the particles of the medium to vibrate and transfer energy from one particle to the next. Show Answer Correct Answer: D) Causing the particles of the medium to vibrate and transfer energy from one particle to the next. 37. What best describes the doppler effect? A) An apparent change in frequency of a wave due to the relative motion between a wave source and an observer. B) When sound changes pitch. C) When light changes color. D) An apparent change in the amplitude of a wave due to the relative motion between a wave source and an observer. Show Answer Correct Answer: A) An apparent change in frequency of a wave due to the relative motion between a wave source and an observer. 38. Which diagram shows how the light from a candle is reflected by a mirror, and shows the position of the image formed? A) B. B) C. C) A. D) D. Show Answer Correct Answer: C) A. 39. Which types of waves requires matter to carry energy? A) Electromagnetic waves only. B) Mechanical waves only. C) Electromagnetic and mechanical waves. D) Longitudinal and electromagnetic waves. Show Answer Correct Answer: B) Mechanical waves only. 40. Jerry counts the number of waves that pass a given point in a certain amount of time on the beach. What property of waves does Jerry measure? A) Wavelength. B) Period. C) Frequency. D) Amplitude. Show Answer Correct Answer: C) Frequency. 41. The height of a wave from the center is called the ..... A) Oscillation. B) Frequency. C) Amplitude. D) Wavelength. Show Answer Correct Answer: C) Amplitude. 42. A red light has a wavelength of 650nm.It is shone through a double slit spacing 0.2mm onto a screen 2m away.The fringe spacing is? A) 6.5 x 10$^{-3}$ m. B) 1.6 x 10$^{-6}$ m. C) 6.5 x 10 $^{-6}$ m. D) 1.6 x 10$^{-3}$ m. Show Answer Correct Answer: A) 6.5 x 10$^{-3}$ m. 43. The waves bend around the (edges) objects and don't only travel in straight lines. A) Diffraction. B) Absorption. C) Reflection. D) Refraction. Show Answer Correct Answer: A) Diffraction. 44. A section of a longitudinal wave where the particles are crowded together is called a A) RAREFACTION. B) SURFACE WAVE. C) COMPRESSION. D) VIBRATION. Show Answer Correct Answer: C) COMPRESSION. 45. Infrared rays have a shorter wavelength than ..... A) Radio waves. B) Ultraviolet rays. C) X-rays. D) Gamma rays. Show Answer Correct Answer: A) Radio waves. 46. A 0.75 m open-open tube is resonating a sound wave (speed of sound is 343 m/s). What would the second harmonic frequency be? A) 257 Hz. B) 515 Hz. C) 228 Hz. D) 457 Hz. Show Answer Correct Answer: D) 457 Hz. 47. The frequency is defined as the height of the wave in metres A) True. B) False. C) Don't know/Can't remember. D) None of the above. Show Answer Correct Answer: B) False. 48. In what ways does black body radiation contribute to our understanding of the universe? A) Black body radiation has no impact on our understanding of the universe. B) Black body radiation is only relevant for laboratory experiments. C) Black body radiation only affects Earth's atmosphere. D) By analyzing the spectrum of light emitted by celestial bodies, we can determine their temperature and composition, leading to a better understanding of the universe. Show Answer Correct Answer: D) By analyzing the spectrum of light emitted by celestial bodies, we can determine their temperature and composition, leading to a better understanding of the universe. 49. What is the relationship between amplitude and energy transport in a wave? A) Amplitude and energy transport are not related. B) Amplitude and energy transport are directly proportional. C) Amplitude and energy transport are inversely proportional. D) Amplitude and energy transport have a logarithmic relationship. Show Answer Correct Answer: B) Amplitude and energy transport are directly proportional. 50. A pipe that is closed at one end and open at the other resonates at a fundamental frequency of 240 Hz. The next frequency it resonates at is most nearly. A) 720 Hz. B) 80 Hz. C) 480 Hz. D) 120 Hz. E) 960 Hz. Show Answer Correct Answer: A) 720 Hz. 51. An ambulance is driving quickly towards Jack with its siren on. How will the siren sound to Jack compared to if the ambulance was stationary? A) The siren will sound the same, just louder. B) The siren sounds the same. C) The siren has a lower pitch. D) The siren has a higher pitch. Show Answer Correct Answer: D) The siren has a higher pitch. 52. Which of the following statements about sound is NOT correct? A) Sound travels slower than light. B) Sound may be produced by vibrating systems. C) Sound is transmitted as transverse waves. D) Sound does not travel through a vacuum. Show Answer Correct Answer: C) Sound is transmitted as transverse waves. 53. What is the definition of amplitude in a wave? A) The time it takes for one complete wave to pass a certain point. B) The height of a wave measured from rest to crest. C) The number of complete waves that occur in one second. D) The distance from one point on a wave to the same point on the next wave. Show Answer Correct Answer: B) The height of a wave measured from rest to crest. 54. A fire alarm is not loud enough and the pitch is too low. An engineer adjusts the alarm so that it produces a louder note of a higher pitch.What effect does this have on the amplitude and on the frequency of the sound? A) A larger F greater. B) A larger F smaller. C) A smaller F greater. D) A smaller F smaller. Show Answer Correct Answer: A) A larger F greater. 55. What happens when light hits a mirror? A) It reflects. B) It makes a color. C) It makes a rainbow. D) It passes through. Show Answer Correct Answer: A) It reflects. 56. Sound waves are also known as ..... waves. A) Compression. B) Longitudinal. C) Neither. D) Both longitudinal and compression. Show Answer Correct Answer: D) Both longitudinal and compression. 57. Which has a longer wavelength A) Microwave. B) X-ray. C) All the above. D) None of the above. Show Answer Correct Answer: A) Microwave. 58. Identify the basic components of a wave. A) Crest and Trough. B) Amplitude and Frequency. C) Wavelength and Speed. D) Medium and Particles. Show Answer Correct Answer: D) Medium and Particles. 59. What does the term "transparent" refer to in the context of material properties? A) Transmits no light and is not see-through. B) Transmits all light and is see-through. C) Scatters light and is partially see-through. D) Absorbs or reflects all light and is not see-through. Show Answer Correct Answer: B) Transmits all light and is see-through. 60. These wavelengths correspond to light in the visible section of the Electromagnetic Spectrum400nm, 470nm, 510nm, 650nmWhich wavelength corresponds to red light? A) 470nm. B) 400nm. C) 510nm. D) 650nm. Show Answer Correct Answer: D) 650nm. ← 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