Sound Multiple Choice Questions and Answers 21 PDF Book Download

Sound multiple choice questions (MCQs), sound quiz answers, test prep 21 to learn online high school courses for physics degree. Sound and sound waves MCQs, sound quiz questions and answers for online school degrees. Learn characteristics of sound, noise pollution, sound waves in physics, echo of sound test prep for high school teacher certification.

Learn high school physics MCQs: level of noise recommended in most countries over an eight-hour workday is usually, with choices 85-90 db, 65-70 db, 75-80 db, and 45-50 db for online school degrees. Free physics study guide for online learning sound and sound waves quiz questions to attempt multiple choice questions based test.

MCQs on Sound Worksheets 21 PDF Book Download

MCQ: A normal conversation have sound intensities of 3×10-6Wm-2. decibel level for intensity is

  1. 50 dB
  2. 64.8 dB
  3. 70.5 dB
  4. 48.8 dB

B

MCQ: Level of noise recommended in most countries over an eight-hour workday is usually

  1. 65-70 dB
  2. 85-90 dB
  3. 75-80 dB
  4. 45-50 dB

B

MCQ: If a nurse counts 68 heartbeats in 1 minute, then period of heartbeats should be

  1. 1.9 s
  2. 2 s
  3. 0.88 s
  4. 3 s

C

MCQ: Human voice results from vibration of

  1. ears
  2. heart
  3. vocal chords
  4. muscles

C

MCQ: As compare to air, sound waves travel

  1. 3 times faster
  2. 5 times slower
  3. 5 times faster
  4. 2 times lower

C