This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part Ii) Chapter 17 Waves – Quiz 70 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 70 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is wave diffraction? A) The absorption of waves by a material. B) The bending of waves around obstacles and the spreading of waves as they pass through openings. C) The amplification of waves as they travel. D) The reflection of waves off a surface. Show Answer Correct Answer: B) The bending of waves around obstacles and the spreading of waves as they pass through openings. 2. Sound travels at 1400m/s in water. If a ship sends a sonar signal to map the bottom of the ocean and it returns after 2 seconds, how deep is the ocean? A) 700m. B) 1400m. C) 2800m. D) 6000m. Show Answer Correct Answer: B) 1400m. 3. What is the phenomenon called when a wave bends around the edge of an obstacle? A) Reflection. B) Refraction. C) Diffraction. D) Interference. Show Answer Correct Answer: C) Diffraction. 4. What creates the Doppler Effect? A) The bunching of waves, then the spreading out of waves creating a change in pitch. B) The spreading of sound waves, then the bunching up of sound waves creating a change in pitch. C) A consistent frequency that creates the same pitch. D) None of the above. Show Answer Correct Answer: A) The bunching of waves, then the spreading out of waves creating a change in pitch. 5. The line in a ray diagram that shows the direction of the barrier and is drawn at a right angle, or perpendicular, or to the barrier A) Normal. B) Ray. C) Period. D) Periodic wave. Show Answer Correct Answer: A) Normal. 6. The magnitude of De broglie wavelength $\lambda$ $\alpha$ A) $\lambda_e>\lambda_p>\lambda_n>\lambda_{\alpha}$. B) $\lambda_e>\lambda_n>\lambda_p>\lambda_{\alpha}$. C) $\lambda_{\alpha}>\lambda_p>\lambda_n>\lambda_e$. D) $\lambda_{\alpha}>\lambda_n>\lambda_p>\lambda_e$. Show Answer Correct Answer: A) $\lambda_e>\lambda_p>\lambda_n>\lambda_{\alpha}$. 7. Which is an example of the lowest wavelength? A) X-rays. B) Radio waves. C) Infrared light. D) None of the above. Show Answer Correct Answer: B) Radio waves. 8. Sound travels fastest through ..... A) Solids. B) Liquids. C) Gases. D) The speed of sound is the same through all media. Show Answer Correct Answer: A) Solids. 9. Which of the following is a measure of the maximum displacement of a wave from its equilibrium position? A) Amplitude. B) Velocity. C) Wavelength. D) Frequency. Show Answer Correct Answer: A) Amplitude. 10. Wave motion:Earthquakes A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 11. P waves are earthquake waves that are ..... A) Longitudinal and only travel through solids. B) Longitudinal and can travel in liquids and solids. C) Transverse and can travel in liquids and solids. D) Transverse and only travel through solids. Show Answer Correct Answer: B) Longitudinal and can travel in liquids and solids. 12. Frequency is how many waves pass a point in 1 second. If 100 waves pass a given point in 4 seconds, what is the wave's frequency? A) 25 Hz. B) 100 Hz. C) 4 Hz. D) 400 Hz. Show Answer Correct Answer: A) 25 Hz. 13. Occurs when an object vibrates at or near a certain frequency causes a second object to vibrate A) Echo. B) Reflection. C) Refraction. D) Resonance. Show Answer Correct Answer: D) Resonance. 14. The ..... is the highest point on a transverse wave, and the ..... is the lowest point. A) Trough, Crest. B) Crest, Trough. C) Compression, Rarefaction. D) Rarefaction, Compression. Show Answer Correct Answer: B) Crest, Trough. 15. What causes the color of an object? A) The wavelength of light it emits. B) The frequency of light it absorbs. C) The temperature of the object. D) The angle of light it reflects. Show Answer Correct Answer: A) The wavelength of light it emits. 16. Select the correct order of waves on the EMS from low to high energy A) Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma. B) Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio. C) Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio. D) Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma. Show Answer Correct Answer: A) Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma. 17. A tuning fork creates a sound wave with a frequency of 250 Hz. The wavelength of the wave is 1.36 m. What is the speed of sound? A) 0.005 m/s. B) 340 m/s. C) 184 m/s. D) 184 s. Show Answer Correct Answer: B) 340 m/s. 18. Which of these words describes the point of maximum displacement from the equilibrium position of a wave? A) Wavelength. B) Frequency. C) Amplitude. D) Focal point. Show Answer Correct Answer: C) Amplitude. 19. A microwave has a frequency of 300MHz. What is the wavelength of these waves? (Speed = 300 000 000 m/s) A) 1000 m. B) 100 m. C) 10 m. D) 1 m. Show Answer Correct Answer: D) 1 m. 20. How many wavelengths are there on a string vibrating at its fundamental frequency? A) 1/4. B) 1/2. C) 1. D) 2. Show Answer Correct Answer: B) 1/2. 21. A higher frequency sound has a A) Higher pitch. B) Lower pitch. C) Same pitch. D) No pitch. Show Answer Correct Answer: A) Higher pitch. 22. The higher the pitch, the ..... the wavelength and the ..... the frequency. A) Shorter, higher. B) Shorter, lower. C) Longer, higher. D) Longer, lower. Show Answer Correct Answer: A) Shorter, higher. 23. What do we call the vibrations that transfer or move energy from place to place? A) Waves. B) Vibrations. C) Medium. D) Force. Show Answer Correct Answer: A) Waves. 24. What happens when the high points of two waves meet? A) The resulting wave is has a bigger amplitude. B) The resulting wave has a smaller amplitude. C) The resulting wave has the same amplitude as the original waves. D) There is no change to the amplitude of the waves. Show Answer Correct Answer: A) The resulting wave is has a bigger amplitude. 25. Find the first three harmonics of a string of linear mass density 2.00 g/m and length 0.600 m when the tension in it is 50.0 N. A) 132 Hz, 264 Hz, 395 Hz. B) 66 Hz, 132 Hz, 198 Hz. C) 264 Hz, 528 Hz, 792 Hz. D) None of the above. Show Answer Correct Answer: A) 132 Hz, 264 Hz, 395 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 9Class 11 Physics (Part Ii) Chapter 17 Waves Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books