This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 47 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 47 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The type of wave that requires a medium to travel is A) Mechanical. B) Electromagnetic. C) Both of these. D) Neither of these. Show Answer Correct Answer: A) Mechanical. 2. The number of waves that passes a certain point in a set period of time A) Frequency. B) Amplitude. C) Wavelength. D) Amplength. Show Answer Correct Answer: A) Frequency. 3. How does the concept of black body radiation relate to the electromagnetic spectrum? A) Black body radiation helps in understanding the distribution of energy emitted by objects at different temperatures across the electromagnetic spectrum. B) Black body radiation only applies to visible light. C) Black body radiation is unrelated to the electromagnetic spectrum. D) Black body radiation is limited to ultraviolet radiation. Show Answer Correct Answer: A) Black body radiation helps in understanding the distribution of energy emitted by objects at different temperatures across the electromagnetic spectrum. 4. What can spectroscopy tell us about an astronomical object? A) Its temperature, density, spin, motion, and chemical composition. B) Its color only. C) Its age. D) Its distance from Earth. Show Answer Correct Answer: A) Its temperature, density, spin, motion, and chemical composition. 5. If an object's density is less than the density of water, which of these is true? A) The object will sink in water. B) The object will float in water. C) The object will float on air. D) The object has no buoyancy. Show Answer Correct Answer: B) The object will float in water. 6. When electromagnetic waves enter the ionised layer of ionosphere, then the relative permittivity i. e. dielectric constant of the ionised layer A) Does not change. B) Appears to increase. C) Appears to decrease. D) Sometimes appears to increase and sometimes to decrease. Show Answer Correct Answer: C) Appears to decrease. 7. The spreading of a wave into the region behind an obstruction is called A) Diffraction. B) Refraction. C) Superposition. D) Interference. Show Answer Correct Answer: A) Diffraction. 8. A material has a high optical density. What will this do to the speed of light when it enters? A) Speed it up. B) Slow it down. C) Stays the same. D) None of the above. Show Answer Correct Answer: B) Slow it down. 9. We see the objects around us due to the fact that the light gets ..... A) Refracted of them. B) Reflected of them. C) All the above. D) None of the above. Show Answer Correct Answer: B) Reflected of them. 10. An interaction between 2 waves that causes a smaller amplitude A) Constructive interference. B) Destructive interference. C) Resonance. D) Diffraction. Show Answer Correct Answer: B) Destructive interference. 11. Electromagnetic waves travel A) At the speed of light. B) Only in air. C) Fastest in solids. D) Only if they have a medium. Show Answer Correct Answer: A) At the speed of light. 12. Which waves move side to side as a sine wave perpendicular to the direction of the wave? A) P waves. B) Surface waves. C) S waves. D) Radiation. Show Answer Correct Answer: C) S waves. 13. A wave of velocity 4 m/s and wavelength 6 m. what is it's frequency A) 4/6 Hz. B) 4/6 sec. C) 6/4 hz. D) 24 hz. Show Answer Correct Answer: A) 4/6 Hz. 14. When comparing X rays with visible light, which statement is correct? A) X-rays travel faster in a vacuum. B) X rays have a higher frequency. C) Only X rays can be polarised. D) X rays do not show diffraction effects. Show Answer Correct Answer: B) X rays have a higher frequency. 15. Mr. Journey and Mr. Andrews are creating waves using a 3-inch zinc-coiled Slinky. If they double the frequency of the waves which they are creating (without any alteration in the medium), then one can be sure that ..... A) The speed will double. B) The wavelength will double. C) The speed will halve. D) The wavelength will halve. Show Answer Correct Answer: D) The wavelength will halve. 16. The speed of a wave depends on: A) Distance. B) Time. C) The medium. D) Frequency. Show Answer Correct Answer: C) The medium. 17. A wave has a time period of 0.2 s. What is the frequency of the wave? A) 0.2 Hz. B) 5 Hz. C) 0.2 s. D) 5 s. Show Answer Correct Answer: B) 5 Hz. 18. The loudness of the sound depends on A) Wavelength. B) Amplitude. C) Frequency. D) None of the above. Show Answer Correct Answer: B) Amplitude. 19. What is the principle of superposition of waves? A) The resulting wave is the subtraction of the individual waves at each point in space. B) The resulting wave is the multiplication of the individual waves at each point in space. C) The resulting wave is the division of the individual waves at each point in space. D) The resulting wave is the sum of the individual waves at each point in space. Show Answer Correct Answer: D) The resulting wave is the sum of the individual waves at each point in space. 20. What determines the pitch of a sound wave? A) Amplitude. B) Wavelength. C) Frequency. D) Speed. Show Answer Correct Answer: C) Frequency. 21. What is the time between one wave and the next? A) Amplitude. B) Frequency. C) Period. D) Wavelength. Show Answer Correct Answer: C) Period. 22. A wave that moves parallel to its medium. Sound is an example. A) Ocean. B) Electromagnetic. C) Transverse. D) Longitudinal. Show Answer Correct Answer: D) Longitudinal. 23. En una onda longitudinal, la onda viaja ..... al medio. A) Paralelo. B) Perpendicular. C) Junto. D) Inclinado. Show Answer Correct Answer: A) Paralelo. 24. Explain how light behaves when it encounters a prism. A) Light is absorbed completely by the prism. B) Light bends and disperses into a spectrum when it passes through a prism. C) Light reflects off the surface of the prism. D) Light passes through without any change. Show Answer Correct Answer: B) Light bends and disperses into a spectrum when it passes through a prism. 25. What occurs when two plates come together and the denser one is forced under back into the mantle? A) Reduction. B) Subduction. C) Conduction. D) Convection. Show Answer Correct Answer: B) Subduction. ← 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