This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 54 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 54 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If you look at a magenta T-Shirt with green filter glasses on it will look A) Brown. B) Red. C) White. D) Black. Show Answer Correct Answer: D) Black. 2. A dolphin sends out a sound wave. An echo returns 0.010s later from a fish which is 7.5m from the dolphin. What is the speed of the sound wave in water? A) 0.075m/s. B) 0.15m/s. C) 750m/s. D) 1500m/s. Show Answer Correct Answer: D) 1500m/s. 3. A Mechanical Wave needs a ..... to travel. A) Force. B) Vibration. C) Medium. D) Amplitude. Show Answer Correct Answer: C) Medium. 4. Which of the following best describes the Doppler effect? A) Change in wave frequency due to the motion of the source or observer. B) Reflection of waves from a surface. C) Diffraction of waves around an obstacle. D) Interference of two waves of the same frequency. Show Answer Correct Answer: A) Change in wave frequency due to the motion of the source or observer. 5. How does wave diffraction affect the spreading of waves? A) Wave diffraction causes waves to spread out. B) Wave diffraction causes waves to move in a straight line. C) Wave diffraction causes waves to decrease in amplitude. D) Wave diffraction has no effect on the spreading of waves. Show Answer Correct Answer: A) Wave diffraction causes waves to spread out. 6. What is the key to understanding the Universe according to the text? A) Light and its properties. B) Gravity. C) Black holes. D) Time travel. Show Answer Correct Answer: A) Light and its properties. 7. High amplitude A) The sound is louder because the wave carries more energy. B) The sound is softer due to less energy. C) The sound has a lower pitch. D) The sound is distorted and unclear. Show Answer Correct Answer: A) The sound is louder because the wave carries more energy. 8. Sound does not travel in ..... A) Solids. B) Empty space. C) Liquids. D) Gases. Show Answer Correct Answer: B) Empty space. 9. Longitudinal waves never need a medium to transport energy. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 10. Explain the concept of standing wave patterns. A) Standing wave patterns are formed due to the interference of two waves with the same frequency and amplitude traveling in opposite directions, resulting in nodes and antinodes. B) Standing wave patterns are always stationary and do not change over time. C) Standing wave patterns only have nodes and no antinodes. D) Standing wave patterns are caused by the collision of two waves with different frequencies. Show Answer Correct Answer: A) Standing wave patterns are formed due to the interference of two waves with the same frequency and amplitude traveling in opposite directions, resulting in nodes and antinodes. 11. An electromagnetic wave in a vacuum has a wavelength of 0.07 m. What is its frequency in Hz? A) 4.3 x 10$^{18 }$Hz. B) 2.1 x 10$^{16 }$Hz. C) 2.1 x 10$^{6 }$Hz. D) 4.3 x 10$^{9 }$Hz. Show Answer Correct Answer: D) 4.3 x 10$^{9 }$Hz. 12. What is the phenomenon of sound wave bouncing back from a barrier? A) Refraction. B) Reflection. C) Diffraction. D) Interference. Show Answer Correct Answer: B) Reflection. 13. The matter through which a mechanical wave travels is called a A) Wavelength. B) Medium. C) Frequency. D) Conductor. Show Answer Correct Answer: B) Medium. 14. Does a constructive interference have a higher or lower amplitude A) Higher. B) Lower. C) Middle. D) None of the above. Show Answer Correct Answer: A) Higher. 15. All waves can be reflected and refracted. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 16. Which best describes the order of the technology used to transmit a sound through the radio? A) Microphone $\rightarrow$ transmitter $\rightarrow$ microphone. B) Radio $\rightarrow$ transmitter $\rightarrow$ radio. C) Radio $\rightarrow$ transmitter $\rightarrow$ microphone. D) Microphone $\rightarrow$ transmitter $\rightarrow$ radio. Show Answer Correct Answer: D) Microphone $\rightarrow$ transmitter $\rightarrow$ radio. 17. What is the wavelength of the fundamental frequency of a standing wave? A) Equal to the length of the string or medium. B) Twice the length of the string or medium. C) Half the length of the string or medium. D) Dependent on the tension of the string or medium. Show Answer Correct Answer: B) Twice the length of the string or medium. 18. What is the speed of a wave with a wavelength of 2 m and a frequency of 2.5 s? A) 2.5 m/s. B) 5 m/s. C) 4.5 m/s. D) 6 m/s. Show Answer Correct Answer: B) 5 m/s. 19. In the photoelectric effect which of the following increase when the intensity of the light incident on the metal plate is increased? A) The frequency of the photons. B) The maximum kinetic energy of the photoelectrons. C) The number of photons emitted per second. D) The threshold frequency. Show Answer Correct Answer: C) The number of photons emitted per second. 20. What does one observe on the screen in a Young's experiment if white light illuminates the double slit instead of light of a single wavelength? A) A white central fringe and no other fringes. B) A dark central fringe and a series of alternating white and dark fringes on each side of the center. C) A white central fringe and a series of colored and dark fringes on each side of the center. D) A continuous band of colors with no dark fringes anywhere. Show Answer Correct Answer: C) A white central fringe and a series of colored and dark fringes on each side of the center. 21. What is the role of frequency in black body radiation? A) Frequency affects the temperature of the black body. B) Frequency has no impact on black body radiation. C) Frequency determines the color of the radiation. D) Frequency determines the energy of the photons emitted. Show Answer Correct Answer: D) Frequency determines the energy of the photons emitted. 22. What is the direction of vibrations in a longitudinal wave? A) Towards the direction of wave travel. B) Away from the direction of wave travel. C) In the same direction as the wave travel. D) 90$^\circ$ to the direction of wave travel. Show Answer Correct Answer: C) In the same direction as the wave travel. 23. What is transferred by a wave? A) Energy. B) Matter. C) Particles. D) Mass. Show Answer Correct Answer: A) Energy. 24. Waves caused by earthquakes are known as A) Frequency waves. B) Standing waves. C) Seismic waves. D) Electromagnetic waves. Show Answer Correct Answer: C) Seismic waves. 25. As waves move forward, only ..... is carried by the waves. A) Matter. B) Air. C) Energy. D) Particles. Show Answer Correct Answer: C) Energy. ← PreviousNext →Related 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 8Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 9Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books