Sound Multiple Choice Questions 21 PDF Download

Learn sound MCQs, grade 10 online physics test 21, characteristics of sound multiple choice questions and answers. Characteristics of sound revision test has physics worksheets, helping answer key with choices as 64.8 db, 50 db, 70.5 db and 48.8 db of multiple choice questions (MCQ) with characteristics of sound quiz as a normal conversation have sound intensities of 3×10-6wm-2. decibel level for intensity is for competitive exam prep, viva interview questions. Free physics study guide to practice characteristics of sound quiz to attempt multiple choice questions based test.

MCQs on Sound Quiz PDF Download Worksheets 21

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


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


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


MCQ. Human voice results from the vibration of

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


MCQ. As compare to air, sound waves travel

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