28/03/2020 Sound Waves(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your Sound Waves(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. Which of the following is not a type of electromagnetic wave? SoundRed lightRadio wavesGamma rays2. The sound can travel in air when:Particles of medium travel from one place to anotherBoth particles as well as disturbance travel from one place to anotherDisturbance moveThere is no moisture in the atmosphere3. Before the main shock waves, the earthquake produces the characteristic sound waves which some animals like rhinoceros can hear. Can you guess the kind of sound waves produced here?Audible SoundsUltrasonic soundsInfrasonic soundsNone of these4. Sound waves are longitudinal waves which have _________________ and rarefactions. None of the aboveCrestsCompressionsTroughs5. _________________ is the highness or lowness of a sound.VolumePitchTension6. The higher the amplitude, the __________________ the sound. HigherQuieterLouderLower7. A key of mechanical piano is first struck gently and then struck again but much harder this time. What kind of change in sound will you observe in the second case:Sound will be louder but the pitch will not be differentSound will be louder but the pitch will be lowerBoth loudness and pitch will remain unaffectedSound will be louder and the pitch will also be higher8. The lower the frequency, the _____________ the sound. LouderQuieterLowerHigher9. Due to which phenomena sound is heard at longer distances in nights than in day?Diffraction of soundInterference of soundReflectionRefraction10. How loud are noises in space?Very quiet with a few noises, almost like walking in the forest.Never been there, I wouldn't know.It's space, everyone knows there are no sounds in space.Really loud, nothing out there to stop the sound waves11. We can easily distinguish between the sounds of the different singers even without having seen them. This is all due the different quality or timber of their sounds. On what factor does the quality of sound depend?WavelengthWaveformWave amplitudeWave frequency12. We can distinguish between a man's voice and a woman's voice of the same loudness even without seeing them. This is due to a characteristic of sound which measures the shrillness of sounds. Can you choose the correct unit of the quantity on which this characteristic of sound depends?HertzMeterUnitlessMeter/second13. Loudness measures the sound energy reaching the ear per second and depends on the amplitude of the sound wave. What is the unit used to measure the loudness of sound? HertzMeter/secondSecondDecibel14. What will be the effect of temperature on speed of sound?The speed of sound decreases with the decrease of temperature of the medium.The speed of sound increases with the increase of temperature of the medium.The speed of sound increases with the decrease of temperature of the mediumThe speed of sound decreases with the increases of temperature of the medium.15. What is the unit of loudness?All of the aboveDecibelPhonBel16. What is the speed of sound in air?334 m/s336 m/s332 m/s330 m/s17. Before playing the orchestra in a musical concert, a sitarist tries to adjust the tension and pluck the string suitably. By doing so, he is adjusting (a) Amplitude of the sound (b) Frequency of the sitar string with the frequency of other musical instruments (c) Intensity of sound (d) Loudness of soundChoose the correct option:Only bA and cB and d18. On increasing the temperature, the speed of sound in air:First increases then becomes constantIncreasesDoes not changeDecreases19. Another term for a sound reflection off of a wall or other object through which a sound wave cannot pass is EchoReverbAmplitudeVibration20. Name the characteristic of the sound which distinguishes a sharp sound from a grave or dull sound?PitchResonanceEchoIntensity21. The speed of the vibration is called ___________________.PitchFrequencyRhythm22. The loudness or softness of a sound is _____________PitchVolumeSound23. Which of the following can produce longitudinal as well as transverse waves under different conditions?None of theseSlinkyBatsTuning fork24. In this animation what kind of interference is shown? RefractionReflectionDestructiveConstructive25. Given below is the diagram of human ear. Choose the correct labeling of the parts A, B and C.A-ear drum, B-auditory nerve, c-ear canalA-ear canal, B-Eustachian tube, C-auditory nerveA-ear canal, B-Eustachian tube, C-cochleaA-ear lobe, B-ear canal, C-auditory nerve26 out of 25Time is Up!
