This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 36 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 36 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The electrical field and magnetic field of electromagnetic wave are ..... A) Parallel. B) Perpendicular. C) Symmetrical. D) All of the above. Show Answer Correct Answer: B) Perpendicular. 2. What determines the speed of a wave according to the video? A) The wave's frequency. B) The loudness of the wave. C) The wave's amplitude. D) The medium it travels through. Show Answer Correct Answer: D) The medium it travels through. 3. Water waves travel from deeper water to more shallow water. This causes them to refract. Which property always remains the same when refraction occurs? A) Wavelength. B) Frequency. C) Amplitude. D) Speed. Show Answer Correct Answer: B) Frequency. 4. A ray of light strikes a mirror. The angle between the incident ray and reflected ray is 60$^\circ$. What is the angle of incidence? A) 30$^\circ$. B) 45$^\circ$. C) 60$^\circ$. D) 120$^\circ$. Show Answer Correct Answer: A) 30$^\circ$. 5. What is the formula to calculate the refractive index of glass when light enters from air? A) N = sec(i) / sec(r). B) N = tan(i) / tan(r). C) N = cos(i) / cos(r). D) N = sin(i) / sin(r). Show Answer Correct Answer: D) N = sin(i) / sin(r). 6. When comparing the wave characteristics of an incident and transmitted wave in two different media, one can be sure that the wavelength will be ..... A) Greatest in the least dense medium. B) Smallest in the least dense medium. C) The same regardless of the density of the medium. D) None of the above. Show Answer Correct Answer: A) Greatest in the least dense medium. 7. Use "crest" and "trough" in a sentence to describe wave characteristics. A) The crest is the lowest point of a wave. B) The trough is the highest point of a wave. C) The crest is the highest point, and the trough is the lowest point. D) The trough is the highest point, and the crest is the lowest point. Show Answer Correct Answer: C) The crest is the highest point, and the trough is the lowest point. 8. A car horn has a frequency of 400 Hz. The car is moving away from an intersection at 20 m s$^{-1}$. The frequency heard by a person standing at the frequency would be A) Greater than 400 Hz. B) Less than 400 Hz. C) 400 Hz. D) Greater than 400 Hz and then less than 400 Hz. Show Answer Correct Answer: B) Less than 400 Hz. 9. The pitch of a sound is most closely related to the A) Frequency of the sound waves. B) Distance from the sound source. C) Medium through which the sound travels. D) Intensity of the sound. Show Answer Correct Answer: A) Frequency of the sound waves. 10. Which of the following statements best describes the law of reflection? A) The angle of incidence is greater than the angle of reflection. B) The angle of reflection is greater than the angle of incidence. C) The angle of incidence is equal to the angle of reflection. D) None of the above. Show Answer Correct Answer: C) The angle of incidence is equal to the angle of reflection. 11. What is the calculation to find the time period of a sound wave? A) Time period = 1/frequency. B) Time period = frequency. C) Time period = speed. D) Time period = wavelength. Show Answer Correct Answer: A) Time period = 1/frequency. 12. When Red, Green and Blue light are shone onto one area the resulting colour is ..... A) White. B) Black. C) Brown. D) Yellow. Show Answer Correct Answer: A) White. 13. Which of the following factors does NOT affect the speed of sound? A) Temperature. B) State of matter of the medium. C) Density of the medium. D) Frequency of the sound. Show Answer Correct Answer: D) Frequency of the sound. 14. What happens to the wavelength of a wave if its frequency increases, assuming the speed remains constant? A) The wavelength increases. B) The wavelength decreases. C) The wavelength remains the same. D) The wavelength becomes zero. Show Answer Correct Answer: B) The wavelength decreases. 15. What is the range of frequency for Infrasound? A) Below 20 Hz. B) 20-20k Hz. C) Above 20k Hz. D) 10-10k Hz. Show Answer Correct Answer: A) Below 20 Hz. 16. TRUE OR FALSE:Radio is a type of transverse wave A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 17. Differentiate between a wave's "crest" and "trough." A) Crest is the highest point, and trough is the lowest point. B) Trough is the highest point, and crest is the lowest point. C) Both refer to the highest point. D) Both refer to the lowest point. Show Answer Correct Answer: A) Crest is the highest point, and trough is the lowest point. 18. One wavelength is the distance between adjacent peaks or troughs. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. Which type of graph best represents an analog signal? A) Bar Graph. B) Line Graph. C) All the above. D) None of the above. Show Answer Correct Answer: B) Line Graph. 20. Which list places the electromagnetic energies in order from most energy to least energy? A) X-ray, Radio, Visible. B) Ultraviolet, Inferred, Radio. C) Radio, Visible, Gamma. D) Visible, Ultraviolet, X-Ray. Show Answer Correct Answer: B) Ultraviolet, Inferred, Radio. 21. A wave has frequency of 5 Hz and a speed of 30 m/s. What is the wavelength of the wave? A) 30 m. B) 150 m. C) 5 m. D) 6 m. Show Answer Correct Answer: D) 6 m. 22. The distance between the peak of a wave and the equilibrium position. A) Frequency. B) Wavelength. C) Pitch. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 23. Electromagnetic waves are made up of oscillating ..... A) Particles. B) Protons. C) Electric and magnetic fields. D) Electric fields. Show Answer Correct Answer: C) Electric and magnetic fields. 24. An observer hears a sound wave emitted from a moving source. The observed frequency is less than the frequency of sound emitted from the source. What could be the reason for this? A) The source is moving away from the observer. B) The source is moving towards the observer. C) The speed of the sound wave in air decreases due to the movement of the source. D) The speed of the sound wave in air increases due to the movement of the source. Show Answer Correct Answer: A) The source is moving away from the observer. 25. What happens when a pulse reaches the fixed end of a rope? A) The pulse is reflected as a trough. B) The pulse continues to travel in the same direction. C) The pulse disappears. D) The pulse is reflected as a crest. Show Answer Correct Answer: A) The pulse is reflected as a trough. ← 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