This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If the frequency of an oscillation is 8 Hz, its period is: A) 8 s. B) 8 Hz. C) 0.125 s. D) 0.125 Hz. Show Answer Correct Answer: C) 0.125 s. 2. True or False:Frequency is how many waves pass per second. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 3. The difference between one note and other in music is equivalent to: A) The amplitude. B) The frequency. C) The wavelength. D) The nodes. Show Answer Correct Answer: B) The frequency. 4. What is the amplitude of a wave? A) Where there is no wave movement. B) The distance the wave oscillates from it's resting position. C) A disturbance that transfers energy from one place to another. D) The distance between two corresponding parts of a wave. Show Answer Correct Answer: B) The distance the wave oscillates from it's resting position. 5. What is "amplitude" in the context of wave properties? A) The frequency of a wave. B) The bending of a wave around a barrier. C) The measure of the size or magnitude of a wave. D) The speed of a wave. Show Answer Correct Answer: C) The measure of the size or magnitude of a wave. 6. The width of central maximum is directly proportional to the wavelength of light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. What is transferred by the movement of waves? A) Matter. B) Energy. C) Nothing. D) Water. Show Answer Correct Answer: B) Energy. 8. Define refraction in the context of waves. A) Refraction is the bending of waves as they pass from one medium to another, resulting in a change in speed and direction. B) Refraction is the scattering of waves in all directions as they travel through a medium. C) Refraction is the absorption of waves by a medium, leading to energy loss without direction change. D) Refraction is the reflection of waves when they hit a barrier, causing no speed change. Show Answer Correct Answer: A) Refraction is the bending of waves as they pass from one medium to another, resulting in a change in speed and direction. 9. A construction company designs a new office tower with an outer surface mostly made of glass (nglass = 1.52). The company wishes that the glass appear a reddish-orange without having to use coloured glass. Instead, a thin film (nfilm = 1.65) is used that maximizes the reflection of that colour of light (wavelength 615 nm). What thickness would this film need to be? A) 1.5 x 10-8 m. B) 2.67 x 10-8 m. C) 8.67 x 10-8 m. D) 1.2 mm. E) 9.32 x 10-8 m. Show Answer Correct Answer: E) 9.32 x 10-8 m. 10. Which of the following best describes the phenomenon of wave interference? A) Waves bouncing off a surface. B) Waves bending around an obstacle. C) Waves combining to form a new wave pattern. D) Waves changing speed in different media. Show Answer Correct Answer: C) Waves combining to form a new wave pattern. 11. What are the two main types of waves? A) Mechanical waves and electromagnetic waves. B) Transverse waves and longitudinal waves. C) Radio waves and seismic waves. D) Sound waves and light waves. Show Answer Correct Answer: A) Mechanical waves and electromagnetic waves. 12. Sound will travel slowest through which of the following forms of matter (media)? A) Milk. B) A desk. C) Air. D) A door. Show Answer Correct Answer: C) Air. 13. If the time interval between the first crest and the twenty trough in a wave motion is 0.74 sec then the frequency is ..... Hz A) 55. B) 25. C) 0.25. D) 50. Show Answer Correct Answer: B) 25. 14. Infrared radiation is commonly used in: A) Airport body scanners. B) Remote controls. C) MRI machines. D) FM radio broadcasting. Show Answer Correct Answer: B) Remote controls. 15. What happens when a wave pulse is reflected from a fixed end? A) The wave continues unchanged. B) The wave inverts. C) The wave doubles in amplitude. D) The wave stops. Show Answer Correct Answer: B) The wave inverts. 16. True or false:as you move along the spectrum, radio to gamma waves, the wavelengths decrease in size (get smaller) A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling A) Surface wave. B) Transverse wave. C) Electromagnetic wave. D) Longitudinal wave. Show Answer Correct Answer: B) Transverse wave. 18. Which part of the longitudinal waves has the highest amplitude? A) Tightly coiled spring. B) Loosely coiled spring. C) Rarefaction. D) None of the above. Show Answer Correct Answer: A) Tightly coiled spring. 19. Displacement current is always A) Equal to conduction current. B) Less than conduction current. C) Greater than conduction current. D) The sum of current due to flow of positive and negative ions. Show Answer Correct Answer: A) Equal to conduction current. 20. What should be observed in a beaker to study refraction? A) Reflection. B) Diffraction. C) Refraction. D) Absorption. Show Answer Correct Answer: C) Refraction. 21. An ambulance drives towards you. You hear the siren ..... A) At a higher pitch than usual. B) At a lower pitch than usual. C) At the same pitch as usual. D) Who cares, get out of the way of the amulance!. Show Answer Correct Answer: A) At a higher pitch than usual. 22. The SI unit of frequency is hertz. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. The height of the wave (distance from rest to crest) A) Trough. B) Crest. C) Wavelength. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 24. Light waves are ..... waves. A) Transverse. B) Compressional. C) Longitudinal. D) Electromagnetic. Show Answer Correct Answer: D) Electromagnetic. 25. What is the result of a wave contacting a hard surface? A) The wave is absorbed. B) The wave changes its frequency. C) The wave reflects. D) The wave continues without any change. Show Answer Correct Answer: C) The wave reflects. 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