28/03/2020General Waves – Types and Properties(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your General Waves - Types and Properties(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. 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? 8 1 2 42. What is the most fundamental property of wave? temperatue pressure wavelength frequency3. In a transverse wave, the distance between two adjacent crests is the wavelength twice the wavelength one quarter of the wave length half of the wave length4. In the animation, what type of wave is shown? Refracted Rarefied Transverse Longitudinal5. The source of sound generating of a frequency of 3 kHz reaches an observer with a speed of 0.5 times the velocity of sound in air. The frequency heard by the observer is? 6 kHz 4 kHz 3 kHz 1kHz6. The period of vibration of a wave of wavelength 30 m moving at a speed of 300 m/s is 330 s 270 s 0.1 s 10 s7. A wave transmits momentum. Can’t it transfer angular momentum? False True8. 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). 1167Hz 945Hz 985Hz 1077Hz9. 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 0.17 s 0.6 s 6s10. The distance between two successive crests of a water wave is 1 m. If a particle on the surface of the water makes two complete vertical oscillations in 1 second, calculate the speed of the wave 2.0 m/s 3.0 m/s 1.0 m/s 0.5 m/s11. 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 __________ 600Hz 630Hz 720Hz 930Hz12. An organ pipe, open at both ends produce 5 beats per second when vibrated with a source of frequency 200Hz. The second harmonic of the same pipe produces 10 beats per second with a source of frequency 420 Hz. The frequency of source is? 205Hz 195Hz 190Hz 210Hz13. A transverse wave and a longitudinal wave travelling in the same direction in a medium differ essentially in their frequency direction of vibration of the particles of the medium amplitude period of vibration of the particles of the medium14. In the animation shown, at the point where the two waves cross, which property changes? Amplitude Frequency Index of refraction Speed15. As the frequency of a spring wave is increased, the ______ Wavelength decreases Wavelength increases Velocity increases Velocity decreases16. All waves except ______ waves must travel through a medium. Light Sound Compressional Water17. Which of the following is not true about waves? all waves require a material medium for their propagation waves transfer energy from one place to another electromagnetic waves have the same velocity in the same medium particles of a medium vibrate if there is a wave motion in tte medium18. Sound travels through a gas under which of the following condition? Transverse condition Isothermal condition Non-isothermal condition Adiabatic condition19. 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 III & IV only I & IV only II & IV only I, II & III only20. 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. 1m 12/13m 32/322m 33/32m21. What are the essential properties a medium must possess for the propagation of mechanical waves? Constant temperature Minimum friction Maximum friction Stable pressure22. What are the essential properties a medium must possess for the propagation of mechanical waves Stable pressure Maximum friction Minimum friction Constant temperature23. 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 510Hz 480Hz 540Hz24. As you produce a wave on a spring, which of the following quantities are you NOT able to change? Wavelength Frequency Velocity Amplitude25. A source emits a sound of a frequency of 400Hz, but the listener hears it’s to be 390Hz. Then? The listener is moving away from the source The source is moving towards the listener The listener is moving towards the source The listener has a defective ear26 out of 25Time is Up!