Welcome to your General Waves - Types and Properties(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. When a pebble is dropped into a pond of still water, what happens? The pebble moves Particles move Waves move Water moves 2. A racing car moving towards a cliff sound its horn. The driver observes that the sound reflected from the cliff has a pitch one octave higher than the actual sound of the horn. If v is the velocity of sound, the velocity of the car is? v/√2 v/3 v/2 v/4 3. If the wavelength of a wave travelling with a velocity of 360 m/s is 60 m. The period of the wave is 3.6 s 6s 0.17 s 0.6 s 4. If a particle travelling with a speed of 0.9 of the speed of sound and is emitting radiations of frequency if 1kHz and moving towards the observer, what is the apparent frequency? 0.4 kHz 1.1 kHz 10 kHz 0.8 kHz 5. A wave travels a distance of 20 cm in 3 s. The distance between successive crests of the wave is 4 cm. What is the frequency of the wave? 0.6 Hz 15.0 Hz 8.0 Hz 1.67 Hz 6. A transverse wave and a longitudinal wave travelling in the same direction in a medium differ essentially in their amplitude period of vibration of the particles of the medium frequency direction of vibration of the particles of the medium 7. A boat at anchor is rocked by waves whose crests are 100 m apart and whose velocity is 25 m/s. At what interval does the wave crest reach the boat? 2500 s 0.24 s 4 s 75 s 8. As you produce a wave on a spring, which of the following quantities are you NOT able to change? Wavelength Velocity Amplitude Frequency 9. Sound travels through a gas under which of the following condition? Transverse condition Isothermal condition Non-isothermal condition Adiabatic condition 10. What are the essential properties a medium must possess for the propagation of mechanical waves Stable pressure Maximum friction Minimum friction Constant temperature 11. A train is approaching with velocity 25m/s towards a pedestrian standing on the track, frequency of horn of train is 1 kHz. Frequency heard by the pedestrian is (v=350m/s). 945Hz 1167Hz 985Hz 1077Hz 12. The phenomenon by which stars recede from each other is explained by __________ Neutron star theory White dwarf Black hole theory Red shift 13. Any line or section taken through an advancing wave in which all particles are in the same phase is called the wavelength wave amplitude wave front wave crest 14. In the animation shown, at the point where the two waves cross, which property changes? Frequency Index of refraction Speed Amplitude 15. In the animation, what type of wave is shown? Transverse Longitudinal Refracted Rarefied 16. A wave transmits momentum. Can’t it transfer angular momentum? True False 17. In a transverse wave, the distance between two adjacent crests is one quarter of the wave length twice the wavelength the wavelength half of the wave length 18. For an aluminium the modulus of rigidity is 2.1×1010 N/m2 and density is 2.7×103 kg/m3. Find the speed of transverse waves in the medium. 25.14×10³ m/s 24.1×10³ m/s 2.79×10³ m/s 27.9×10³ m/s 19. All waves except ______ waves must travel through a medium. Compressional Light Water Sound 20. A person is standing on a railway platform and a train is approaching to him, what is maximum wavelength of sound he can hear? Wavelength of whistle=1m, speed of sound in air=330m/s, speed of train=36km/h. 33/32m 1m 12/13m 32/322m 21. What are the essential properties a medium must possess for the propagation of mechanical waves? Constant temperature Maximum friction Minimum friction Stable pressure 22. If a light wave has a wave length of 500 nm in air, what is the frequency of the wave? 6.0 e14 Hz 2.5 e14 Hz 6.0 e12 Hz 3.0 e14 Hz 23. What is the most fundamental property of wave? wavelength frequency temperatue pressure 24. A car sounding its horn at 480Hz moves towards a high wall at a speed of 20m/s, the frequency of the reflected sound heard by the man sitting in the car will be nearest to ________ 570Hz 540Hz 510Hz 480Hz 25. Which of the following statements are correct of the production and propagation of waves?I. vibration produces waves II. waves transmit energy along the mediumIII. the medium through which the wave travels does not travel with the waveIV. waves do not require any medium for transmission I, II & III only III & IV only II & IV only I & IV only 1 out of 25 Time is Up! Time's up
