This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If a graph shows an inverse relationship between frequency and wavelength in different media, what can be inferred about the speed of waves? A) It increases. B) It decreases. C) It remains constant. D) No relationship can be determined. Show Answer Correct Answer: C) It remains constant. 2. If the wavelength gets longer, the frequency gets A) Higher. B) Lower. C) All the above. D) None of the above. Show Answer Correct Answer: B) Lower. 3. What is the equation for the relationship between focal length, position of the object, and position of the image? A) 1/f = u-v. B) F = u + v. C) 1/f = 1/u + 1/v. D) F = u-v. Show Answer Correct Answer: C) 1/f = 1/u + 1/v. 4. What is the term for the number of waves that pass a fixed point in a given amount of time? A) Amplitude. B) Frequency. C) Wavelength. D) VelocityTagsDOK Level 1:Recall. Show Answer Correct Answer: B) Frequency. 5. What is transferred in waves? A) Energy. B) Objects. C) Magic. D) Light. Show Answer Correct Answer: A) Energy. 6. Which of the following is transmitted by waves? A) Atoms. B) Matter. C) Energy. D) Resonance. Show Answer Correct Answer: C) Energy. 7. It is the change in frequency (in pitch) of the sound wave in relation to an observer. A) Doopler effect. B) Doppler effect. C) Frequency. D) Vibration. Show Answer Correct Answer: B) Doppler effect. 8. Two waves are traveling through a container of an inert gas. Wave A has an amplitude of 0.4 cm. Wave B has an amplitude of 1.2 cm. The energy transported by wave B must be ..... the energy transported by wave A. A) Doubled. B) 4 times greater. C) 9 times greater. D) 16 times greater. Show Answer Correct Answer: C) 9 times greater. 9. A thin coating, of refractive index 1.2, is applied to a glass camera lens, of refractive index n > 1.2, to minimize the intensity of the light reflected. The wavelength of the light is . The coating thickness required to minimize the intensity of reflected light is A) $\frac{\lambda}{2}$. B) $\frac{\lambda}{2\times1.2}$. C) $\frac{1.2\lambda}{4}$. D) $\frac{\lambda}{4\times1.2}$. Show Answer Correct Answer: D) $\frac{\lambda}{4\times1.2}$. 10. TRUE OR FALSE:Light is a type of transverse wave A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. In a sound wave experiment, if the frequency is 400 Hz and the wavelength is 0.8 meters, what is the speed of the sound wave? A) 320 m/s. B) 500 m/s. C) 480 m/s. D) 200 m/s. Show Answer Correct Answer: A) 320 m/s. 12. Sound travels through the air as waves. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 13. What is the standard unit of frequency? A) M/s. B) Hz. C) M. D) Lambda. Show Answer Correct Answer: B) Hz. 14. An electron is accelerated from rest, between twopoints A and B at which the potentials are 20V and40 V respectively. The De Broglie wavelengthassociated with the electron at B will be- A) 0.75 A. B) 7.5 A. C) 2.75 A. D) 2.75 m. Show Answer Correct Answer: C) 2.75 A. 15. Turning up the volume on the TV causes a change in which wave characteristics? A) Energy/intensity of sound and amplitude. B) Intensity/energy of sound and frequency. C) Amplitude and wavelength. D) Amplitude and frequency. Show Answer Correct Answer: A) Energy/intensity of sound and amplitude. 16. The colour of visible light with the shortest wavelength is: A) Green. B) Red. C) Blue. D) Violet. Show Answer Correct Answer: D) Violet. 17. Visible light wavelengths range approximately from: A) 450 nm to 800 nm. B) 300 nm to 500 nm. C) 350 nm to 600 nm. D) 400 nm to 700 nm. Show Answer Correct Answer: D) 400 nm to 700 nm. 18. Fill in the blank:Black bodies are perfect ..... and perfect ..... A) Absorbers and emitters. B) Conductors and insulators. C) Reflectors and absorbers. D) Transmitters and receivers. Show Answer Correct Answer: A) Absorbers and emitters. 19. If a guitar string has a fundamental frequency of 500 Hz, what is the frequency of its third harmonic? A) 250 Hz. B) 500 Hz. C) 1000 Hz. D) 1500 Hz. Show Answer Correct Answer: D) 1500 Hz. 20. A wave travels from a less dense medium to a more dense medium. The reflected wave is ..... compared to the incident wave. A) Inverted with a lower amplitude. B) Inverted with the same amplitude. C) Upright with a lower amplitude. D) Upright with the same amplitude. Show Answer Correct Answer: C) Upright with a lower amplitude. 21. Which of the following does NOT belong in the electromagnetic spectrum: A) X-ray. B) Sound wave. C) Ultra violet rays. D) Microwaves. Show Answer Correct Answer: B) Sound wave. 22. What happens to the pitch of a sound as the source moves away from you? A) The pitch of the sound increases as the source moves away from you. B) The pitch of the sound fluctuates randomly as the source moves away from you. C) The pitch of the sound remains the same as the source moves away from you. D) The pitch of the sound decreases as the source moves away from you. Show Answer Correct Answer: D) The pitch of the sound decreases as the source moves away from you. 23. In a Young's double-slit experiment, the slit separation is doubled. To maintain the same fringe spacing on the screen, the screen-to-slit distance D must be changed to: A) D/2. B) D $\sqrt{2}$. C) 2D. D) 4D. Show Answer Correct Answer: C) 2D. 24. Which of these is false? A) Sound waves move in all directions. B) Sound waves only work if air particles are present. C) Sound does not travel through water. D) None of the above. Show Answer Correct Answer: C) Sound does not travel through water. 25. If a wave has a velocity of 50 m/sec, and a frequency of 2 m, then what is the wavelength of the wave pattern? A) 25 m. B) 25 sec. C) 25 kg. D) 25 N. Show Answer Correct Answer: A) 25 m. ← 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