Question 11 MarkConstant exposure to sounds above $80\ dB$ can cause $.........$AnswerConstant exposure to sounds above $80\ dB$ can cause health problems.View full question & answer→
Question 21 MarkSound of about $.........$ decibels or more causes many health hazards.AnswerSound of about $80\ dB$ decibels or more causes many health hazards.View full question & answer→
Question 31 MarkHumans can pick up sounds in the range of to $.........$AnswerHumans can pick up sounds in the range of to $10\ dB$ to $180\ dB.$View full question & answer→
Question 41 MarkUnpleasant sound that is very loud is called $.........$AnswerUnpleasant sound that is very loud is called noise.View full question & answer→
Question 51 MarkDrum produces sound due to vibration of its $.........$AnswerDrum produces sound due to vibration of its stretched membrane.View full question & answer→
Question 61 MarkA longer string will produce a sound of a $.........$ pitch.AnswerA longer string will produce a sound of a lower pitch.View full question & answer→
Question 71 MarkThe characteristic of a sound which distinguishes a shrill sound from a hoarse one is called $.........$AnswerThe characteristic of a sound which distinguishes a shrill sound from a hoarse one is called pitch.View full question & answer→
Question 81 MarkLoudness of a sound $.........$ with increase in the distance between the listener and the source.AnswerLoudness of a sound decreases with increase in the distance between the listener and the source.View full question & answer→
Question 91 MarkThe $.........$ distinguishes the sounds of a guitar and a bongo with the same pitch and loudness.AnswerThe timbre distinguishes the sounds of a guitar and a bongo with the same pitch and loudness.View full question & answer→
Question 101 MarkA shrill voice has $.........$ frequency.AnswerA shrill voice has larger frequency.View full question & answer→
Question 111 MarkLoudness of a sound decreases with $.........$ in its amplitude.AnswerLoudness of a sound decreases with decrease in its amplitude.View full question & answer→
Question 121 MarkThe time taken by a wave to complete one oscillation is called its $.........$AnswerThe time taken by a wave to complete one oscillation is called its time periodView full question & answer→