Sound Multiple Choice Questions 21 PDF Download

Learn sound MCQs, grade 10 physics test 21 for learning online courses and test prep, characteristics of sound multiple choice questions and answers. Characteristics of sound revision test includes physics worksheets to learn for online mastering physics courses distance learning.

Physics multiple choice questions (MCQ) on normal conversation have sound intensities of 3×10-6wm-2. decibel level for intensity is with choices 64.8 db, 50 db, 70.5 db and 48.8 db, characteristics of sound quiz for competitive exam prep, summative and formative assessment interview questions with answers key. Free physics study guide to learn 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. 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