MCQ Characteristics of Sound Waves Chapter 11 Class 9 Science Advertisement MCQ’s For All Chapters – Science Class 9th 1. Which of the following is not a characteristic of a sound wave?FrequencyAmplitudeSpeedReflectionQuestion 1 of 202. The distance between two consecutive compressions is calledFrequencyWavelengthTime periodAmplitudeQuestion 2 of 203. The wavelength of a sound wave is represented byνλATQuestion 3 of 204. The unit of wavelength isHertzSecondMetreDecibelQuestion 4 of 205. The number of complete oscillations per unit time is calledAmplitudeFrequencyTime periodWavelengthQuestion 5 of 206. The SI unit of frequency isSecondMetreHertzNewtonQuestion 6 of 207. The time taken by two consecutive compressions to pass a fixed point is calledAmplitudeTime periodFrequencyWavelengthQuestion 7 of 208. The relationship between frequency and time period isT = νT = 1/νν = Tν = T²Question 8 of 209. The SI unit of time period isSecondHertzMetreJouleQuestion 9 of 2010. The property of sound that helps us identify different voices even with same pitch isLoudnessQuality or timberFrequencyAmplitudeQuestion 10 of 2011. The magnitude of the maximum disturbance from mean position is calledWavelengthAmplitudeFrequencyCrestQuestion 11 of 2012. Loudness of a sound depends on itsFrequencyAmplitudeWavelengthSpeedQuestion 12 of 2013. The SI unit of amplitude for sound wave is same as that ofTimeLength or pressureVelocityEnergyQuestion 13 of 2014. The pitch of sound depends on itsAmplitudeFrequencyWavelengthSpeedQuestion 14 of 2015. A soft sound hasLow amplitudeHigh amplitudeHigh frequencyShort wavelengthQuestion 15 of 2016. The speed of sound is given by the equationv = λνv = Aνv = λ/Av = ν/AQuestion 16 of 2017. If wavelength increases, then for the same frequency, the speed of sound willDecreaseRemain sameIncreaseBecome zeroQuestion 17 of 2018. The speed of sound depends mainly onNature and temperature of mediumAmplitude and frequencyPressure and loudnessIntensity and pitchQuestion 18 of 2019. The speed of sound is fastest inAirWaterIronAlcoholQuestion 19 of 2020. As the temperature of a medium increases, the speed of soundDecreasesIncreasesRemains constantBecomes zeroQuestion 20 of 20 Loading...
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