This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 2 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What frequency range represent the human hearing capacity A) Below 20 Hz. B) Between 20 Hz and 20 000 Hz. C) Between 20 000Hz and 40 000 Hz. D) Above 20 000 Hz. Show Answer Correct Answer: B) Between 20 Hz and 20 000 Hz. 2. Waves that can travel through empty space are called ..... waves. Waves that require a medium to travel, such as air or water, are called ..... waves. A) Mechanical, electromagnetic. B) Electromagnetic, mechanical. C) Crest, trough. D) Compressional, rarefactional. Show Answer Correct Answer: B) Electromagnetic, mechanical. 3. In music, the frequency of the sound waves determine its ..... A) Pitch. B) Loudness. C) Clarity. D) Medium. Show Answer Correct Answer: A) Pitch. 4. How does the hazard level of electromagnetic waves change as the frequency of the waves increases? A) Energy and wavelength increase; it becomes more hazardous. B) Energy and wavelength decrease; becomes less hazardous. C) Energy decreases, wavelength increases; it becomes less hazardous. D) Energy increases, wavelength decreases; it becomes more hazardous. Show Answer Correct Answer: D) Energy increases, wavelength decreases; it becomes more hazardous. 5. This word is associated with the height of a wave. A) Frequency. B) Wavelength. C) Wave Speed. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 6. A disturbance in a medium which moves energy from one place to another is called a A) Wave. B) Pulse. C) Node. D) Antinode. Show Answer Correct Answer: A) Wave. 7. Bottom of the wave A) Crest. B) Trough. C) Frequency. D) Wavelength. Show Answer Correct Answer: B) Trough. 8. According to the law of reflection, the angle of incidence is equal to the ..... A) Size of the mirror. B) Shape of the light source. C) Angle of refraction. D) Angle of reflection. Show Answer Correct Answer: D) Angle of reflection. 9. What are standing waves? A) Waves that appear to remain in one place and do not seem to move. B) Waves that seem to move along a trajectory. C) All the above. D) None of the above. Show Answer Correct Answer: A) Waves that appear to remain in one place and do not seem to move. 10. A disturbance that travels through the medium from one location to another location A) Mechanical wave. B) Electromagnetic wave. C) Light wave. D) Speed wave. Show Answer Correct Answer: A) Mechanical wave. 11. What is the significance of the first harmonic in standing waves? A) The first harmonic is always the loudest in standing waves. B) The first harmonic is irrelevant in standing waves. C) The first harmonic represents the fundamental frequency of the system. D) The first harmonic is only present in odd-numbered systems. Show Answer Correct Answer: C) The first harmonic represents the fundamental frequency of the system. 12. Electromagnetic waves are different from mechanical waves because: A) Electromagnetic waves does not requieres a medium to travel. B) Electromagnetic waves only travel through a medium. C) Electromagnetic waves travel slower than mechanical waves. D) Eectromagnetic waves are not emitted from the Sun. Show Answer Correct Answer: A) Electromagnetic waves does not requieres a medium to travel. 13. After loosening a guitar string, how does the final frequency (f) of the string compare to its initial frequency? A) Less than Initial. B) Same as Initial. C) Greater than Initial. D) Remains unchanged. Show Answer Correct Answer: A) Less than Initial. 14. What is an example of a transverse wave? A) X-Ray. B) Light Waves. C) Slinky. D) Water waves. Show Answer Correct Answer: D) Water waves. 15. If 10 waves pass a point every $16s$ A) $10Hz$. B) $1.6Hz$. C) $0.625Hz$. D) $0.312Hz$. Show Answer Correct Answer: C) $0.625Hz$. 16. How has resonance been responsible for collapsing bridges? A) Resonace has led to earthquakes that tear down bridges. B) Resonance in bridges causes them to begin to vibrate and eventually collapse. C) Resonance cannot tear down a bridge. D) Resonance causes the bridge to wear away over many years, and eventially fall. Show Answer Correct Answer: B) Resonance in bridges causes them to begin to vibrate and eventually collapse. 17. Which of the following proves that electromagnetic waves are transverse? A) Reflection. B) Diffraction. C) Interference. D) Polarisation. Show Answer Correct Answer: D) Polarisation. 18. Distance between two adjacent crests or compressions in a series of waves A) Wave speed. B) Amplitude. C) Wavelength. D) Velocity. Show Answer Correct Answer: C) Wavelength. 19. Which types of EM wave can cause (DNA mutations and ) cancer in humans? (a) A) A. Ultraviolet, X-rays and Gamma rays. B) Microwave, X-rays, Gamma rays. C) Visible Light, Ultraviolet and Gamm. D) Don't know/Can't remember. Show Answer Correct Answer: A) A. Ultraviolet, X-rays and Gamma rays. 20. What type of mechanical wave motion causes particles to move both parallel and perpendicular to the wave direction, resulting in a circular motion? A) P waves. B) S waves. C) Surface waves. D) Scattering. Show Answer Correct Answer: C) Surface waves. 21. There are two types of mechanical waves: A) EM and Compressional. B) Compressional and Longitudinal. C) Transverse and Longitudinal. D) Transverse and Electromagnetic. Show Answer Correct Answer: C) Transverse and Longitudinal. 22. What is the angle of incidence in relation to the angle of reflection? A) The angle of incidence is always greater than the angle of reflection. B) The angle of incidence is half of the angle of reflection. C) The angle of incidence is equal to the angle of reflection. D) The angle of incidence is perpendicular to the angle of reflection. Show Answer Correct Answer: C) The angle of incidence is equal to the angle of reflection. 23. What is the frequency of a wave with time period of 0.08s? A) 8Hz. B) 1.25Hz. C) 12.5Hz. D) 0.08Hz. Show Answer Correct Answer: C) 12.5Hz. 24. How would you describe the movement of a transverse wave? A) Up and down. B) Back and forth. C) In zigzags. D) Linear. Show Answer Correct Answer: A) Up and down. 25. The SI unit for frequency is ..... A) M. B) M/s. C) Hertz. D) S. Show Answer Correct Answer: C) Hertz. ← PreviousNext →Related QuizzesClass 11 Physics (Part Ii) Chapter 17 Waves Quiz 1Class 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 10Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books