This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part Ii > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Explain how the "medium" through which a wave travels can impact its speed. A) The medium determines wave frequency. B) Different mediums can alter wave speed. C) The medium has no effect on wave speed. D) The medium influences wave amplitude. Show Answer Correct Answer: B) Different mediums can alter wave speed. 2. If an object placed 10.0 cm in front of the lens produces an image 15 cm from the lens on the opposite side, what is the magnitude of the focal length for the lens? A) 30.0 cm. B) 25.0 cm. C) 6.00 cm. D) 5.00 cm. Show Answer Correct Answer: C) 6.00 cm. 3. What happens to a wave when it moves around a barrier? A) It bends and spreads out. B) It travels in a straight line. C) It bounces back from the barrier. D) It cannot go around the barrier. Show Answer Correct Answer: A) It bends and spreads out. 4. What is a longitudinal wave A) Ask my teacher. B) A wave vibrating perpendicular to the direction of energy transfer. C) Hmmmm. D) A wave vibrating in the direction of energy transfer. Show Answer Correct Answer: D) A wave vibrating in the direction of energy transfer. 5. The lowest part of a transverse wave is known as a (a) . A) Compression. B) Rarefaction. C) A. Trough. D) Crest. E) Medium. Show Answer Correct Answer: C) A. Trough. 6. The ..... of a wave is how many wavelengths pass a certain point each second. A) Velocity. B) Frequency. C) Compression speed. D) Amplitude. Show Answer Correct Answer: B) Frequency. 7. Waves that have vibrations that move perpendicular to the direction the wave are called: A) Medium. B) Transverse Waves. C) Electromagnetic Spectrum. D) Light Waves. Show Answer Correct Answer: B) Transverse Waves. 8. In an experiment, a wave travels through a medium and its speed is measured. If the medium is changed to one with a higher density, what is likely to happen to the wave speed? A) Remain the same. B) Become zero. C) Decrease. D) Increase. Show Answer Correct Answer: C) Decrease. 9. The disturbance that travelling through medium or vacuum from one place to other by transferring the energy. That sentence is definition for ..... A) Medium. B) Wave. C) Vibration. D) Oscillation. Show Answer Correct Answer: B) Wave. 10. What do we call the section of the EM spectrum that humans can perceive? A) Ultraviolet. B) The rainbow. C) The visible spectrum. D) Black and white. Show Answer Correct Answer: C) The visible spectrum. 11. Which component of the EM wave undergoes the polarisation upon passing through the filter? A) Electric. B) Magnetic. C) Both. D) Mostly electric. E) Mostly magnetic. Show Answer Correct Answer: A) Electric. 12. Complete the statement:The refraction of light occurs because A) The light rebounds off the boundary surface. B) The light changes speed as it enters another medium. C) The light is reflected by the surface of the water. D) None of the above. Show Answer Correct Answer: B) The light changes speed as it enters another medium. 13. What is the effect on the wavelength ($\lambda$) of a guitar string when it is loosened, assuming the length of the string remains the same? A) No change in wavelength. B) Greater than Initial. C) Same as Initial. D) Less than Initial. Show Answer Correct Answer: B) Greater than Initial. 14. What shape are the graphs that represent waves? A) Hyperbolic. B) Parabolic. C) Sinusoidal. D) Linear. Show Answer Correct Answer: C) Sinusoidal. 15. What happens when you increase the amplitude of a sound? A) It makes the sound louder. B) It makes the sound travel faster. C) It increases the wavelength of the sound. D) It increases the frequency of the sound. Show Answer Correct Answer: A) It makes the sound louder. 16. A transverse wave is transporting energy from north to south. The particles of the medium will move A) Both north and south. B) Only north to south. C) Both east and west. D) Only west to east. Show Answer Correct Answer: C) Both east and west. 17. Frequency is the time required to complete one cycle. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. Which of the following statements best describes a longitudinal wave? A) A wave that vibrates at right angles to the direction of energy transfer. B) A wave that vibrates parallel to the direction of energy transfer. C) A light wave. D) A wave that crosses other wavefronts. Show Answer Correct Answer: B) A wave that vibrates parallel to the direction of energy transfer. 19. Sound moves slower under water than through the air. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 20. The ..... of a wave changes when it is reflected. A) Frequency. B) Direction of propagation. C) Wavelength. D) Speed. Show Answer Correct Answer: B) Direction of propagation. 21. A guitar string of length 80cm vibrates with a third harmonic frequency of 305Hz. What is the wavelength of the wave? A) 244cm. B) 16.2cm. C) 53.3cm. D) 3.80cm. Show Answer Correct Answer: C) 53.3cm. 22. What is the purpose of a wave? A) To alter the medium it travels through. B) To transfer matter from one point to another. C) To confuse people. D) To transfer energy from one point to another. Show Answer Correct Answer: D) To transfer energy from one point to another. 23. How are the wave velocity and the wavelength related to the wave's frequency? A) V = f / $\lambda$. B) V = $\lambda$ / T. C) V = f * $\lambda$. D) V = $\lambda$ * T. Show Answer Correct Answer: C) V = f * $\lambda$. 24. An amusement park ride swings back and forth (like a pendulum) once every 17.4 s. What is the ride's frequency? A) 17.4 hz. B) 0.0575 hz. C) 17.4 sec. D) 0.0575 sec. Show Answer Correct Answer: B) 0.0575 hz. 25. Which of the following statements is true about transverse waves? A) They always have the same wavelengths. B) They always have the same velocities. C) They always travel through a dense medium. D) The particles vibrate in perpendicular direction with respect to the wave motion. E) They always have the same frequencies. Show Answer Correct Answer: D) The particles vibrate in perpendicular direction with respect to the wave motion. 26. What do mechanical waves travel through? A) Medium. B) Vacuum. C) The boo. D) Empty space. Show Answer Correct Answer: A) Medium. 27. What is a pulse wave? A) A wave that travels in a vacuum. B) A single oscillation through the medium. C) A wave with continuous oscillation. D) A wave with high frequency. Show Answer Correct Answer: B) A single oscillation through the medium. 28. Longitudinal waves A) The particles of a medium that go back and forth in the same direction as the wave is travelling. B) The particles of a medium that move perpendicular to the direction of the wave. C) The particles of a medium that remain stationary while the wave passes. D) The particles of a medium that move in a circular motion as the wave travels. Show Answer Correct Answer: A) The particles of a medium that go back and forth in the same direction as the wave is travelling. 29. What happens to light when it passes from air into water? A) Light speeds up and changes color when entering water. B) Light disappears completely when it hits the water. C) Light bends and slows down when it passes from air into water. D) Light passes straight through without any change. Show Answer Correct Answer: C) Light bends and slows down when it passes from air into water. 30. Wave motion:A car going 30 m/s A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 31. If a star is being observed from Earth and it's light has shifted towards the red side of the electromagnetic spectrum it would be ..... A) Moving away from the Earth. B) It isn't a star, it is a very large blueberry. C) This is a trick question that cannot be answered. D) Moving towards the Earth. Show Answer Correct Answer: A) Moving away from the Earth. 32. Define the word:Crest A) The highest point of a transverse wave. B) The distance between two points on a wave. C) The center of a transverse wave. D) The lowest point of a transverse wave. Show Answer Correct Answer: A) The highest point of a transverse wave. 33. A string of linear density 1.5 g/m is under a tension of 20 N. What should be its length if its fundamental resonance frequency is 220 Hz? A) 1.1 m. B) 0.26 m. C) 0.96 m. D) 1.2 m. Show Answer Correct Answer: B) 0.26 m. 34. The number of ocean waves that pass a buoy in one second is the ..... of the wave. A) Amplitude. B) Frequency. C) Rarefaction. D) Wavelength. Show Answer Correct Answer: B) Frequency. 35. How many wavelengths are created in an open-closed tube vibrating at its fundamental frequency? A) 1/2. B) 5/4. C) 1. D) 1/4. Show Answer Correct Answer: D) 1/4. 36. Waves that have a (a) frequency have more energy. A) A. higher. B) Lower. C) All the above. D) None of the above. Show Answer Correct Answer: A) A. higher. 37. What happens to a wave when it reflects off a surface? A) The wave loses energy and dissipates. B) The wave changes direction, following the law of reflection. C) The wave speeds up and continues in the same direction. D) The wave becomes a standing wave without reflection. Show Answer Correct Answer: B) The wave changes direction, following the law of reflection. 38. What is the name of the instrument that measures movements in the ground during an earthquake and creates electric signals that can be read to determine an earthquake's magnitude? A) Seismometer. B) Seismic Station. C) Seismograph. D) Seismogram. Show Answer Correct Answer: A) Seismometer. 39. What part of the visible spectrum has the highest energy? A) Orange. B) Green. C) Violet. D) Red. Show Answer Correct Answer: C) Violet. 40. What is the frequency of a sound wave? A) The frequency of a sound wave is determined by its amplitude. B) The frequency of a sound wave is the speed of sound in meters per second. C) The frequency of a sound wave is measured in decibels (dB). D) The frequency of a sound wave is measured in hertz (Hz). Show Answer Correct Answer: D) The frequency of a sound wave is measured in hertz (Hz). 41. Young's double slit experiment is performed.$\lambda$=590nm, screen distance L=1.2m, fringe separation x=3.5 mm. Calculate the slit separation d. A) 6.3 x 10$^{-7}$ m. B) 2.0 x 10$^{-4}$ m. C) 5.2 x 10$^{-4}$ m. D) 1.7 x 10$^{-9}$ m. Show Answer Correct Answer: B) 2.0 x 10$^{-4}$ m. 42. In a progressive wave, what is the term for the maximum displacement from the rest position? A) Wavelength. B) Period. C) Frequency. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 43. Infra red waves are A) Higher frequency than UV but lower than visible. B) Lower frequency than UV and shorter wavelength than microwaves. C) Longer wavelength than radio waves and higher frequency than microwaves. D) Shorter wavelength than gamma rays and a lower frequency than gamma rays. Show Answer Correct Answer: B) Lower frequency than UV and shorter wavelength than microwaves. 44. Light has a speed of ..... meters per second in air. A) 300, 000, 000. B) 3, 000, 000. C) 300. D) 300, 000. Show Answer Correct Answer: A) 300, 000, 000. 45. A student produces a wave in a long spring by vibrating its end. As the frequency of the vibration is doubled, the wavelength in the spring is A) Quartered. B) Unchanged. C) Doubled. D) Halved. Show Answer Correct Answer: D) Halved. 46. What is the speed of a wave with a frequency of 500 Hz and a wavelength of 0.6 meters? A) 300 m/s. B) 100 m/s. C) 200 m/s. D) 600 m/s. Show Answer Correct Answer: A) 300 m/s. 47. The following path of an electron emits a light wave that our eyes can detect. A) One full orbit of the nucleus. B) Excited $\rightarrow$ Ground. C) Ground $\rightarrow$ Excited. D) Protons emit light. The question is misleading. Show Answer Correct Answer: B) Excited $\rightarrow$ Ground. 48. As a transverse wave moves forward, the particles move: A) Perpendicular to the wave's motion. B) Parallel to the wave's motion. C) Stand in one place. D) Move completely down the spring. Show Answer Correct Answer: A) Perpendicular to the wave's motion. 49. Which equation should be used to calculate the speed of a wave? A) Speed = period x hertz. B) Speed = frequency x wavelength. C) Speed = frequency x hertz. D) Speed = period x wavelength. Show Answer Correct Answer: B) Speed = frequency x wavelength. 50. The pitch of a sound is related to its A) Wavelength. B) Frequency. C) Speed. D) Amplitude. Show Answer Correct Answer: B) Frequency. 51. What is the unit of measurement for wavelength? A) Metre/second (m/s). B) Hertz (Hz). C) Metre (m). D) Second (s). Show Answer Correct Answer: C) Metre (m). 52. How does the amplitude of a wave affect its energy? A) Energy is unrelated to amplitude. B) Energy is inversely proportional to amplitude. C) Energy is directly proportional to amplitude. D) Energy is proportional to the square of the amplitude. Show Answer Correct Answer: D) Energy is proportional to the square of the amplitude. 53. When a wave moves around a barrier or though an opening it is known as what? A) Diffraction. B) Interference. C) Reflection. D) Refraction. Show Answer Correct Answer: A) Diffraction. 54. Assume the speed of sound is 340 m/s. What is the lowest frequency that will resonate in a 2.0 m length closed pipe? A) 42.5 Hz. B) 85 Hz. C) 680 Hz. D) 170 Hz. Show Answer Correct Answer: A) 42.5 Hz. 55. A wave where the particles oscillate parallel to the direction of energy transfer is called a ..... wave. A) Parallel. B) Perpendicular. C) Transverse. D) Longitudinal. Show Answer Correct Answer: D) Longitudinal. 56. A substance (like solid, liquid or gas) that the energy of a wave can travel through A) Compression. B) Medium. C) Frequency. D) Amplitude. Show Answer Correct Answer: B) Medium. 57. Define the word:Trough A) The center of a wave. B) The resting position of a wave. C) The lowest point of a transverse wave. D) The highest point of a transverse wave. Show Answer Correct Answer: C) The lowest point of a transverse wave. 58. The higher the volume in a sound the bigger the amplitude. A) Truth. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) Truth. 59. In the equation f=v/2L, L is A) The length of the string. B) The length of a single cycle. C) The speed of light. D) The number of antinodes. Show Answer Correct Answer: A) The length of the string. 60. What is the human range of hearing? A) 20-50, 000 Hz. B) 50-50, 000 Hz. C) 20-50 Hz. D) 20-20, 000 Hz. Show Answer Correct Answer: D) 20-20, 000 Hz. ← 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