MCQ Chapter 18 General Science Class 7 Maharashtra Board MCQ For All Chapters – General Science Class 7Sound : Production of Sound 1. What generates sound according to the document?Still objectsVibrations of an objectLight wavesHeat energyQuestion 1 of 202. Which event listed produces sound through vibration?Clapping handsSwinging a bell clapperBursting a firecrackerKnocking on a doorQuestion 2 of 203. How does sound reach our ears?Through light wavesThrough vibrations in the airBy direct contactThrough water onlyQuestion 3 of 204. What does a singer do to tune a tanpura?Changes its lengthAdjusts the tension in its stringsHammers its pegsPlucks it randomlyQuestion 4 of 205. What determines the pitch of a sound?AmplitudeFrequencyVolumeElasticityQuestion 5 of 206. What happens when you touch a vibrating object?The sound gets louderThe vibrations stop and sound ceasesThe pitch increasesThe frequency decreasesQuestion 6 of 207. What is an oscillator?A musical instrumentAn object that moves back and forthA still objectA sound waveQuestion 7 of 208. What is the maximum distance a rubber band stretches called?FrequencyTime periodAmplitudePitchQuestion 8 of 209. What happens to sound when the amplitude of a rubber band increases?It becomes softerIt becomes louderIt stopsIt lowers in pitchQuestion 9 of 2010. What property allows a stretched rubber band to return to its original state?GravityElasticityFrequencyTensionQuestion 10 of 2011. What is the time period of oscillation?Number of oscillations per secondTime for one complete oscillationMaximum distance of vibrationLoudness of soundQuestion 11 of 2012. What is the unit of frequency?DecibelMeterHertzSecondQuestion 12 of 2013. What does 100 Hz mean?100 seconds per oscillation100 oscillations in one second100 decibels100 amplitudesQuestion 13 of 2014. What happens to the sound of a ruler when its free length is decreased?Pitch decreasesPitch increasesSound stopsAmplitude increasesQuestion 14 of 2015. What is the relationship between pendulum length and time period?Longer pendulum, shorter time periodLonger pendulum, longer time periodNo relationshipShorter pendulum, longer time periodQuestion 15 of 2016. Does changing the amplitude affect the frequency of a pendulum?Yes, it increasesYes, it decreasesNo, it remains the sameIt stops the pendulumQuestion 16 of 2017. What increases the pitch of a wire’s sound in the experiment?Decreasing tensionIncreasing tensionShortening the wireAdding blocksQuestion 17 of 2018. What is the term for the loudness or softness of sound?FrequencyPitchIntensityTime periodQuestion 18 of 2019. What is the unit for measuring sound level?HertzDecibelMeterSecondQuestion 19 of 2020. What happens to sound level when intensity increases tenfold?Increases by 5 dBIncreases by 10 dBDecreases by 10 dBStays the sameQuestion 20 of 20 Loading...
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