This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When unpolarised light passes through a single polarising filter, what happens to the wave? A) Its electric field oscillations are restricted to one plane. B) It gains energy. C) It becomes circularly polarised. D) It becomes longitudinal. Show Answer Correct Answer: A) Its electric field oscillations are restricted to one plane. 2. Sound waves travel faster in the air than in the ground. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 3. What effect does increasing the distance from a wave source have on wave intensity? A) Intensity remains the same. B) Intensity decreases. C) Intensity increases. D) Intensity becomes zero. Show Answer Correct Answer: B) Intensity decreases. 4. Which type of wave can travel without a medium? A) Electromagnetic waves. B) Sound waves. C) Water waves. D) Seismic waves. Show Answer Correct Answer: A) Electromagnetic waves. 5. Define the term wavelength. A) Wavelength is the frequency of a wave. B) Wavelength is the amplitude of a wave. C) Wavelength is the distance between successive crests of a wave. D) Wavelength is the speed of a wave. Show Answer Correct Answer: C) Wavelength is the distance between successive crests of a wave. 6. Which set of conditions would cause the interference maxima produced by a double slit experiment at a distance of 1.5m from the sources to be closest together? A) Yellow light 580nm from the sources 2mm apart. B) Water waves of wavelength 20mm from sources 1m apart. C) Ultrasonic wave of wavelength 1.5cm from sources 40mm apart. D) Violet light of wavelength 380nm from sources 6mm apart. Show Answer Correct Answer: D) Violet light of wavelength 380nm from sources 6mm apart. 7. The ratio of wavelength of deutron and protonaccelerated through the same potential differencewill be A) $\frac{1}{\sqrt[]{2}}$. B) $\sqrt[]{2}$. C) $\frac{1}{2}$. D) $2$. Show Answer Correct Answer: A) $\frac{1}{\sqrt[]{2}}$. 8. Wave motion:FM Radio A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 9. The unit for frequency is A) Lamda. B) Hertz. C) Meters. D) Avis. Show Answer Correct Answer: B) Hertz. 10. The beat frequency between a 440 Hz tuning fork and 444 Hz tuning fork is A) 0 Hz. B) 2 Hz. C) 4 Hz. D) 6 Hz. Show Answer Correct Answer: C) 4 Hz. 11. A wave that does not require a medium A) Electromagnetic wave. B) Surfacewave. C) Medium. D) Transversewave. Show Answer Correct Answer: A) Electromagnetic wave. 12. Which of these is not a type of electromagnetic wave? A) Infrared. B) Ultrasound. C) Visible. D) Gamma. Show Answer Correct Answer: B) Ultrasound. 13. Two beams of light are both the same colour of red. One beam is travelling through air. The other beam is travelling through water. Each beam has a different brightness.Which quantity is the same for both sets of waves? A) Amplitude. B) Frequency. C) Speed. D) Wavelength. Show Answer Correct Answer: B) Frequency. 14. If all light waves are absorbed by a medium, then what color will be perceived? A) White. B) Black. C) Red. D) Green. Show Answer Correct Answer: B) Black. 15. All electromagnetic waves in free space are: A) Longitudinal. B) Transverse. C) Mechanical. D) Stationary. Show Answer Correct Answer: B) Transverse. 16. When part of Earth s crust breaks, ..... waves pass through Earth. A) Seismic. B) Tidal. C) Uniform. D) None of the above. Show Answer Correct Answer: A) Seismic. 17. When a wave bounces off of something and moves in a different direction (a) A) A. reflection. B) Refraction. C) Absorption. D) Propagation. Show Answer Correct Answer: A) A. reflection. 18. What type of wave was shown in the online simulation:transverse or longitudinal? A) Transverse. B) Longitudinal. C) All the above. D) None of the above. Show Answer Correct Answer: A) Transverse. 19. If the time taken to reach quarter the amplitude during the vibration of the simple pendulum is 0.1 sec then the frequency of its vibration equal ..... Hz A) 0.4. B) 1.6. C) 625. D) 0.625. Show Answer Correct Answer: D) 0.625. 20. What is the unit of wave speed? A) Cm/s. B) Miles/h. C) M/s. D) Km/h. Show Answer Correct Answer: C) M/s. 21. The padded dashboard reduces injury in collisions by A) Decreasing the change in velocity of the crash. B) Increasing the impact time. C) Decreasing the mass of the collision. D) All of these. Show Answer Correct Answer: B) Increasing the impact time. 22. Which of the following is an example of a mechanical wave? A) Light wave. B) X-ray wave. C) Sound wave. D) Radio wave. Show Answer Correct Answer: C) Sound wave. 23. Increasing the energy of a wave increases the wave's ..... A) Wavelength. B) Frequency. C) Period. D) Amplitude. Show Answer Correct Answer: D) Amplitude. 24. The note A in the musical scale has a(n) ..... 220 Hz. A) Period. B) Frequency. C) Amplitude. D) Cycle. Show Answer Correct Answer: B) Frequency. 25. A sound wave travels at 330m/s and has a time period of 0.0001s. Calculate the frequency of the sound. (a) A) A. 10 000 Hz. B) Don't know/Can't remember. C) 0.33 Hz. D) 1000 Hz. Show Answer Correct Answer: A) A. 10 000 Hz. ← 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 10Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books