This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part Ii > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 19 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Crest to crest or trough to trough A) Wavelength. B) Trough. C) Crest. D) Amplitude. Show Answer Correct Answer: A) Wavelength. 2. The combination of two or more waves that result in a single wave A) Reflection. B) Interference. C) Diffraction. D) Resonance. Show Answer Correct Answer: B) Interference. 3. A wave that has its amplitude in a direction perpendicular to its motion is called a A) Transverse wave. B) Doppler effect. C) Constructive interference. D) Destructive interference. Show Answer Correct Answer: A) Transverse wave. 4. If you increase frequency what happens to the wavelength? A) Wavelength increases. B) Wavelength decreases. C) Wavelength remains the same. D) None of the above. Show Answer Correct Answer: B) Wavelength decreases. 5. Material (matter) through which a wave travels A) Pitch. B) Medium. C) Sound. D) Doppler Effect. Show Answer Correct Answer: B) Medium. 6. Which type of wave can cause your skin to age prematurely? A) Ultraviolet waves. B) Radio waves. C) X-rays. D) None of the above. Show Answer Correct Answer: A) Ultraviolet waves. 7. What is the key term for waves that pass through a surface? A) Reflection. B) Absorption. C) Transmitted waves. D) Diffraction. Show Answer Correct Answer: C) Transmitted waves. 8. In a transverse wave, the ..... is the lowest point. A) Trough. B) Crest. C) Medium. D) Amplitude. Show Answer Correct Answer: A) Trough. 9. Whats higher on the wave length? A) UV. B) Infrared. C) All the above. D) None of the above. Show Answer Correct Answer: A) UV. 10. The time it takes to complete one cycle is called the period. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. Which of the following is a type of signal that includes binary 0's and 1's? A) Static. B) Linear. C) Analog. D) Digital. Show Answer Correct Answer: D) Digital. 12. What is the relationship between the temperature of a black body and the intensity of radiation emitted? A) Directly proportional to the fourth power of its absolute temperature. B) Inversely proportional to the square of its absolute temperature. C) Proportional to the square root of its absolute temperature. D) Constant regardless of temperature. Show Answer Correct Answer: A) Directly proportional to the fourth power of its absolute temperature. 13. What happens to waves when they arrive at a flexible boundary? A) Reflected, not inverted. B) Reflected, inverted. C) Not reflected, not inverted. D) Not reflected, inverted. Show Answer Correct Answer: A) Reflected, not inverted. 14. High frequency in EM waves equals A) High energy and short wavelength. B) Low energy and short wavelength. C) High energy and long wavelength. D) Low energy and long wavelength. Show Answer Correct Answer: A) High energy and short wavelength. 15. A dog in a car with the window down howls with a sound at 433 Hz. The car is moving at 55.3 mph.b. What frequency does a hawk hear that is moving away from the car at 67.5 mph but in the same direction? A) 368 Hz. B) 508 Hz. C) 426 Hz. D) 415 Hz. Show Answer Correct Answer: C) 426 Hz. 16. If the vertical distance between successive crest and trough is 20cm in a transverse wave then the amplitude equal ..... A) 5. B) 2.5. C) No correct answer. D) 10. Show Answer Correct Answer: D) 10. 17. Waves that require a medium are called A) Gamma rays. B) Transverse waves. C) Light waves. D) Mechanical waves. Show Answer Correct Answer: D) Mechanical waves. 18. For a sound wave, the volume (loudness) of the sound is dependent on the: A) Frequency. B) Wavelength. C) Amplitude. D) Period. Show Answer Correct Answer: C) Amplitude. 19. Particles in water in an ocean wave move A) In a dodecahedron. B) In a right angle. C) In a circle. D) In a square. Show Answer Correct Answer: C) In a circle. 20. A tennis coach paces back and forth along the sideline 10 times in 2 minutes. The frequency of her pacing is A) 5 Hz. B) 0.08 Hz. C) 0.08 s. D) 5 s. Show Answer Correct Answer: B) 0.08 Hz. 21. The type of wave that requires a medium to travel is A) Mechanical. B) Electromagnetic. C) Both of these. D) Neither of these. Show Answer Correct Answer: A) Mechanical. 22. The number of waves that passes a certain point in a set period of time A) Amplitude. B) Frequency. C) Wavelength. D) Amplength. Show Answer Correct Answer: B) Frequency. 23. How does the concept of black body radiation relate to the electromagnetic spectrum? A) Black body radiation helps in understanding the distribution of energy emitted by objects at different temperatures across the electromagnetic spectrum. B) Black body radiation only applies to visible light. C) Black body radiation is unrelated to the electromagnetic spectrum. D) Black body radiation is limited to ultraviolet radiation. Show Answer Correct Answer: A) Black body radiation helps in understanding the distribution of energy emitted by objects at different temperatures across the electromagnetic spectrum. 24. What can spectroscopy tell us about an astronomical object? A) Its temperature, density, spin, motion, and chemical composition. B) Its color only. C) Its age. D) Its distance from Earth. Show Answer Correct Answer: A) Its temperature, density, spin, motion, and chemical composition. 25. When electromagnetic waves enter the ionised layer of ionosphere, then the relative permittivity i. e. dielectric constant of the ionised layer A) Does not change. B) Appears to increase. C) Appears to decrease. D) Sometimes appears to increase and sometimes to decrease. Show Answer Correct Answer: C) Appears to decrease. 26. The spreading of a wave into the region behind an obstruction is called A) Interference. B) Refraction. C) Diffraction. D) Superposition. Show Answer Correct Answer: C) Diffraction. 27. A material has a high optical density. What will this do to the speed of light when it enters? A) Speed it up. B) Slow it down. C) Stays the same. D) None of the above. Show Answer Correct Answer: B) Slow it down. 28. We see the objects around us due to the fact that the light gets ..... A) Refracted of them. B) Reflected of them. C) All the above. D) None of the above. Show Answer Correct Answer: B) Reflected of them. 29. An interaction between 2 waves that causes a smaller amplitude A) Diffraction. B) Constructive interference. C) Resonance. D) Destructive interference. Show Answer Correct Answer: D) Destructive interference. 30. Electromagnetic waves travel A) Only if they have a medium. B) At the speed of light. C) Only in air. D) Fastest in solids. Show Answer Correct Answer: B) At the speed of light. 31. Which waves move side to side as a sine wave perpendicular to the direction of the wave? A) Radiation. B) Surface waves. C) P waves. D) S waves. Show Answer Correct Answer: D) S waves. 32. A wave of velocity 4 m/s and wavelength 6 m. what is it's frequency A) 4/6 Hz. B) 6/4 hz. C) 24 hz. D) 4/6 sec. Show Answer Correct Answer: A) 4/6 Hz. 33. Waves transfer ..... A) Particles. B) Matter. C) Energy. D) None of the above. Show Answer Correct Answer: C) Energy. 34. When comparing X rays with visible light, which statement is correct? A) X rays do not show diffraction effects. B) X rays have a higher frequency. C) X-rays travel faster in a vacuum. D) Only X rays can be polarised. Show Answer Correct Answer: B) X rays have a higher frequency. 35. Mr. Journey and Mr. Andrews are creating waves using a 3-inch zinc-coiled Slinky. If they double the frequency of the waves which they are creating (without any alteration in the medium), then one can be sure that ..... A) The wavelength will double. B) The speed will halve. C) The speed will double. D) The wavelength will halve. Show Answer Correct Answer: D) The wavelength will halve. 36. The speed of a wave depends on: A) Distance. B) Time. C) Frequency. D) The medium. Show Answer Correct Answer: D) The medium. 37. A wave has a time period of 0.2 s. What is the frequency of the wave? A) 0.2 s. B) 5 s. C) 0.2 Hz. D) 5 Hz. Show Answer Correct Answer: D) 5 Hz. 38. The loudness of the sound depends on A) Wavelength. B) Amplitude. C) Frequency. D) None of the above. Show Answer Correct Answer: B) Amplitude. 39. What is the principle of superposition of waves? A) The resulting wave is the multiplication of the individual waves at each point in space. B) The resulting wave is the subtraction of the individual waves at each point in space. C) The resulting wave is the division of the individual waves at each point in space. D) The resulting wave is the sum of the individual waves at each point in space. Show Answer Correct Answer: D) The resulting wave is the sum of the individual waves at each point in space. 40. What determines the pitch of a sound wave? A) Amplitude. B) Wavelength. C) Speed. D) Frequency. Show Answer Correct Answer: D) Frequency. 41. What is the time between one wave and the next? A) Frequency. B) Wavelength. C) Period. D) Amplitude. Show Answer Correct Answer: C) Period. 42. A wave that moves parallel to its medium. Sound is an example. A) Ocean. B) Electromagnetic. C) Longitudinal. D) Transverse. Show Answer Correct Answer: C) Longitudinal. 43. En una onda longitudinal, la onda viaja ..... al medio. A) Inclinado. B) Paralelo. C) Perpendicular. D) Junto. Show Answer Correct Answer: B) Paralelo. 44. Explain how light behaves when it encounters a prism. A) Light is absorbed completely by the prism. B) Light bends and disperses into a spectrum when it passes through a prism. C) Light reflects off the surface of the prism. D) Light passes through without any change. Show Answer Correct Answer: B) Light bends and disperses into a spectrum when it passes through a prism. 45. What occurs when two plates come together and the denser one is forced under back into the mantle? A) Convection. B) Subduction. C) Conduction. D) Reduction. Show Answer Correct Answer: B) Subduction. 46. Which of these waves do NOT require a medium? A) Sound waves. B) Ocean waves. C) Radio waves. D) Seismic waves. Show Answer Correct Answer: C) Radio waves. 47. What component in a phone helps to produce sound? A) Diaphragm. B) Battery. C) Screen. D) Antenna. Show Answer Correct Answer: A) Diaphragm. 48. What is the amplitude of a wave related to? A) Mass. B) Speed. C) Height. D) Velocity. Show Answer Correct Answer: C) Height. 49. Mirage is an application of ..... A) Reflection. B) Refraction. C) Critical angle. D) Total internal reflection. Show Answer Correct Answer: D) Total internal reflection. 50. What is the speed of sound? A) 760 miles per hour. B) 1220 miles per hour. C) 1337 miles per hour. D) None of the above. Show Answer Correct Answer: A) 760 miles per hour. 51. Critically evaluate the claim: "In a vacuum, all waves travel at the same speed." Use mathematical evidence and scientific reasoning in your response. A) Agree, as all waves are the same. B) Disagree, as different waves have different speeds. C) Agree, as vacuum eliminates medium-dependent variations. D) Disagree, as vacuum impedes wave propagation. Show Answer Correct Answer: C) Agree, as vacuum eliminates medium-dependent variations. 52. How do incandescent bulbs produce light? A) Incandescent bulbs produce light by heating a filament until it glows. B) Incandescent bulbs generate light by using LED technology. C) Incandescent bulbs create light by emitting ultraviolet radiation. D) Incandescent bulbs produce light through chemical reactions. Show Answer Correct Answer: A) Incandescent bulbs produce light by heating a filament until it glows. 53. What is the height of the wave called? A) Longitudinal Wave. B) Amplitude. C) Wavelength. D) Volume. Show Answer Correct Answer: B) Amplitude. 54. If a wave has a $\lambda$ $f=$ A) 0.4 m/sec. B) 14 m/sec. C) 40 m/sec. D) 60 m/sec. Show Answer Correct Answer: C) 40 m/sec. 55. Which of the following statements about waves is false? A) Waves can move through most materials. B) Waves have mass. C) Waves cannot travel through empty space (a vacuum). D) Waves are traveling energy. Show Answer Correct Answer: B) Waves have mass. 56. A pulse travels from a more dense medium to a less dense medium. Which is true? A) The wave increases in speed and wavelength; and inverts. B) The wave decreases in speed and wavelength; and remains upright. C) The wave increases in speed and decreases in wavelength; and inverts. D) The wave increases in speed and decreases in wavelength and remains upright. Show Answer Correct Answer: A) The wave increases in speed and wavelength; and inverts. 57. What do we call sound waves above 20, 000 Hz? A) Infrasound. B) Ultrasound. C) Loud sounds. D) Quiet sounds. Show Answer Correct Answer: B) Ultrasound. 58. Which of the following statements about waves is true A) Only transverse waves undergo reflection. B) Longitudinal waves do not undergo refraction, but may be reflected. C) Diffraction can only take place with light waves. D) All waves undergo reflection, refraction and diffraction. Show Answer Correct Answer: D) All waves undergo reflection, refraction and diffraction. 59. Which seismic wave can travel through the earth's core? A) S wave. B) P wave. C) All the above. D) None of the above. Show Answer Correct Answer: B) P wave. 60. Which statement is true about simple harmonic motion? A) There is minimum displacement. B) Mechanical energy is conserved. C) We are not usually interested in the restoring force. D) The acceleration of the oscillating object does not change. Show Answer Correct Answer: B) Mechanical energy is conserved. ← 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