Sound Multiple Choice Questions and Answers 21 PDF Download

Sound Multiple Choice Questions and Answers (MCQs), sound quiz answers pdf, test prep 21 to study high school physics for online degree courses. Practice "sound and sound waves" MCQs, sound quiz questions and answers for online study. Learn characteristics of sound, noise pollution, sound waves in physics, echo of sound test prep for distance learning.

"A normal conversation have sound intensities of 3×10-6Wm-2. The decibel level for the intensity is" Multiple Choice Questions (MCQs) on sound with choices 64.8 db, 50 db, 70.5 db, and 48.8 db for online study. Free physics study guide for online learning sound and sound waves quiz questions for taking online classes.

Sound MCQs Quiz 21 PDF Download

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

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

B

MCQ: The 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 the 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 the 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