Welcome to your General Waves - Types and Properties(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. As you produce a wave on a spring, which of the following quantities are you NOT able to change? Wavelength Velocity Amplitude Frequency 2. By counting the number of crests that pass in a given amount of time, a person can calculate the Wavelength Amplitude Velocity Frequency 3. 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 1.0 m/s 3.0 m/s 0.5 m/s 2.0 m/s 4. 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? 8.0 Hz 1.67 Hz 0.6 Hz 15.0 Hz 5. In a transverse wave, the distance between two adjacent crests is twice the wavelength the wavelength half of the wave length one quarter of the wave length 6. A wave transmits momentum. Can’t it transfer angular momentum? True False 7. 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/2 v/4 v/3 8. What are the essential properties a medium must possess for the propagation of mechanical waves? Stable pressure Maximum friction Constant temperature Minimum friction 9. The loudness and pitch of a sound note depends on __________ Frequency and number of harmonics Intensity and velocity Frequency and velocity Intensity and frequency 10. Mechanical waves are called elastic waves. True False 11. A source emits a sound of a frequency of 400Hz, but the listener hears it’s to be 390Hz. Then? The listener is moving towards the source The listener is moving away from the source The source is moving towards the listener The listener has a defective ear 12. 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 0.8 kHz 1.1 kHz 10 kHz 13. In which medium sound travels faster? Liquid Gas Water vapour Solid 14. 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 1077Hz 1167Hz 985Hz 15. In the animation, what type of wave is shown? Rarefied Transverse Refracted Longitudinal 16. Transverse waves can be formed in fluids. True False 17. 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 ________ 510Hz 570Hz 480Hz 540Hz 18. Sound waves are all Compressional High frequency Electromagnetic Transverse 19. 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). 1077Hz 945Hz 985Hz 1167Hz 20. 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 __________ 630Hz 930Hz 600Hz 720Hz 21. Two waves are propagating with the same amplitude and nearly same frequency in opposite direction, they result in ___ Wave packet Stationary wave Beats Resonance 22. 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 23. What is the most fundamental property of wave? wavelength temperatue pressure frequency 24. In the animation shown, at the point where the two waves cross, which property changes? Index of refraction Amplitude Frequency Speed 25. As the frequency of a spring wave is increased, the ______ Velocity increases Velocity decreases Wavelength decreases Wavelength increases 1 out of 25 Time is Up! Time's up