MCQ Sound Chapter 13 Class 8 ScienceAds MCQ’s For All Chapters – Science Class 8th 1. The voice box is also called asstomachheartlarynxmouthYour comments:Question 1 of 202. Sound is a kind ofworkenergyforcepressureYour comments:Question 2 of 203. The hearing range of human ear is20 Hz to 20,000 Hzless than 20 Hzmore than 20,000 Hz20 Hz to 25,000 HzYour comments:Question 3 of 204. Pitch of sound is determined by itsfrequencyspeedamplitudeloudnessYour comments:Question 4 of 205. The frequency of subsonic sound ismore than 20 Hz100 Hzless than 20 Hzmore than 20,000 HzYour comments:Question 5 of 206. Cochlea is a part ofhearing organsound producing organmuscular organair pollutionYour comments:Question 6 of 207. 1 hertz is equal to1 vibration per minute10 vibrations per minute60 vibrations per minute600 vibrations per minuteYour comments:Question 7 of 208. Sound cannot travel throughairwatervacuumYour comments:Question 8 of 209. The sound in the audible range is calledultrasonic soundsonic soundsubonic soundlight soundYour comments:Question 9 of 2010. Speed isDistancetravelled/TimeTime/DistancetravelledDistance travelled × TimeTime + Distance travelledYour comments:Question 10 of 2011. A pendulum oscillates 20 times in 4 seconds. Find its time period.5 sec.0.001 sec.0.2 sec.0.1 secYour comments:Question 11 of 2012. Loudness of sound is determined bypitchfrequencyamplitudetime periodYour comments:Question 12 of 2013. The number of vibrations made by a vibrating body in one second isfrequencynoiseloudnesspitchYour comments:Question 13 of 2014. The maximum displacement of a body from its mean position is calledamplitudeoscillationperiodic motionfrequencyYour comments:Question 14 of 2015. The velocity of sound at 20°C is approximately3400 m/sec.340 m/sec.430 m/sec.343 m/sec Your comments:Question 15 of 2016. Sound is produced byNon-Vibrating objects onlyVibrating and non- vibrating objectsVibration has no relation to soundVibrating objects onlyYour comments:Question 16 of 2017. Sound cannot travel throughvacuumairwatersolidsYour comments:Question 17 of 2018. Vibration is also known asVibratory motionTranslatory motionOscillatory motionNone of theseYour comments:Question 18 of 2019. Frequency is expressed inKilometerHertzgramDegree centigradeYour comments:Question 19 of 2020. The number of oscillations per second is calledAmplitude of oscillationPitch of oscillationFrequency of oscillationNone of the aboveYour comments:Question 20 of 20 Loading...