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. The loudness or softness of a sound is _____________SoundVolumePitch2. You must have seen the doctor checking the sounds produced in the chest or heart beat of a patient using a medical instrument called Stethoscope. On what principle does this Stethoscope work?Wave motionMultiple refractionsMultiple reflectionsNone of these3. What type of waves are Sound Waves?Latitudinal mechanical wavesLongitudinal wavesLongitudinal wavesLatitudinal waves4. Due to which phenomena sound is heard at longer distances in nights than in day?Interference of soundRefractionDiffraction of soundReflection5. Sound travels best through ___________________.AirWaterSolid6. 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? Meter/secondDecibelHertzSecond7. The echo-receiver of a sonar attached to a ship, receives the echo from the bottom of sea 4 seconds after the ultrasonic waves were sent into the sea. If the speed of sound in water is 1500 m/s, then what is the depth of the sea?15000 m6000 m3000 m3500 m8. The Hertz (Hz) is the unit of measure for which wave property? AmplitudeFrequencyWavelengthSpeed9. The speed at which a wave travels.Wave lengthWave heightWave SpeedDoppler effect10. __________________ is an organized pattern of sound.RhythmNoisePitch11. Which of the following is/ are not applications of Ultrasonic Waves?(a) For measuring the depth of Sea.(b) In sterilizing of a liquid.(c) In Ultrasonography(d) In sterilizing a needle.Only (d)Only (b)Both (c) and (d)Both (a) and (b)12. The speed of the vibration is called ___________________.PitchRhythmFrequency13. 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:A and cOnly bB and d14. The bats can fly in the darkness of night without colliding with the other objects by emitting special sounds while flying. Which characteristic sound is used by the bats to navigate?InfrasoundUltrasoundAudible soundNone of these15. Sound waves are what type of wave?A tidal waveA transvers waveA longitudinal waveA surface wave16. If the frequency of the wave is lowered, what happens to the speed of the sound wave?All of the aboveSound wave speed does not changeSound wave slows downSound wave speeds up17. The type of wave shown is a __________ wave.LongitudinalSoundTransverseLight18. 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?Meter/secondUnitlessHertzMeter19. The material that a wave travels through is called the SpeedMediumReflectionRefraction20. What will be the effect of temperature on speed of sound?The speed of sound increases with the increase of temperature of the medium.The speed of sound decreases with the increases of temperature of the medium.The speed of sound increases with the decrease of temperature of the mediumThe speed of sound decreases with the decrease of temperature of the medium.21. What is the unit of loudness?PhonAll of the aboveBelDecibel22. Given below is the diagram of human ear. Choose the correct labeling of the parts A, B and C.A-ear lobe, B-ear canal, C-auditory nerveA-ear drum, B-auditory nerve, c-ear canalA-ear canal, B-Eustachian tube, C-cochleaA-ear canal, B-Eustachian tube, C-auditory nerve23. What is Intensity of Sound?It is inversely proportional to the square of the distance of point from the source.None of the aboveBothIt is directly proportional to the square of amplitude of vibration, square of frequency and density of the medium.24. Sound waves are longitudinal waves which have _________________ and rarefactions. None of the aboveTroughsCrestsCompressions25. Which of the following can produce longitudinal as well as transverse waves under different conditions?BatsSlinkyNone of theseTuning fork26 out of 25Time is Up!
