Welcome to your General Waves - Types and Properties(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. The phenomenon by which stars recede from each other is explained by __________Black hole theoryWhite dwarfNeutron star theoryRed shift2. Sixty complete waves pass a particular point in 4 s . If the distance three successive troughs of the waves is 15 m , calculate the speed of the waves75 m/s300 m/s112.5 m/s225 m/s3. Following two wave trains are approaching each othery1=asin200πt, y2=asin208πt.The number of beats heard per second is?841Zero4. Two waves of wavelength 99cm and 100cm both travelling with velocity 396m/s are made to interfere. The number of beats produced by them per second is?42185. Two trains, each moving with a velocity of 30m/s, cross each other. One of the trains gives a whistle whose frequency is 600Hz. If the speed of sound is 330m/s, the apparent frequency for passengers sitting in the other train before crossing would be __________720Hz600Hz930Hz630Hz6. In a transverse wave, the distance between two adjacent crests isthe wavelengthtwice the wavelengthone quarter of the wave lengthhalf of the wave length7. Any line or section taken through an advancing wave in which all particles are in the same phase is called thewave amplitudewave crestwave frontwavelength8. Two waves are propagating with the same amplitude and nearly same frequency in opposite direction, they result in ___ResonanceWave packetBeatsStationary wave9. A transverse wave and a longitudinal wave travelling in the same direction in a medium differ essentially in theirperiod of vibration of the particles of the mediumdirection of vibration of the particles of the mediumamplitudefrequency10. In the animation shown, at the point where the two waves cross, which property changes?Index of refractionSpeedFrequencyAmplitude11. 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?10 kHz1.1 kHz0.4 kHz0.8 kHz12. What are the essential properties a medium must possess for the propagation of mechanical waves?Minimum frictionConstant temperatureStable pressureMaximum friction13. A wave frequency of 2Hz and a wavelength of 30 cm. The velocity of the wave is1.5 m/s0.6 ms60.0 m/s6.0 m/s14. What kind of wave is formed in organ pipes?Mechanical wavesLongitudinal stationary waveElectromagnetic wavesTransverse stationary waves15. Which of the following is true of light and sound waves?they both need a material medium for propagationthey are both transverse wavesthey both transmit energytheir velocities in air are equal16. Which of the following is not a type of electromagnetic wave?Gamma radiationSoundRadio wavesRed light17. 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/√2v/3v/2v/418. All waves except ______ waves must travel through a medium.SoundCompressionalLightWater19. 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).945Hz1077Hz1167Hz985Hz20. The material that a wave travels through is called theMediumCompressionRarefactionAmplitude21. 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?1.67 Hz0.6 Hz15.0 Hz8.0 Hz22. What are the essential properties a medium must possess for the propagation of mechanical wavesConstant temperatureMaximum frictionMinimum frictionStable pressure23. As you produce a wave on a spring, which of the following quantities are you NOT able to change?FrequencyWavelengthAmplitudeVelocity24. When a pebble is dropped into a pond of still water, what happens?Water movesThe pebble movesParticles moveWaves move25. A wave transmits momentum. Can’t it transfer angular momentum?TrueFalse26 out of 25Time is Up!