Learn sound waves in physics MCQs, physics test for online learning courses and test prep to practice. Sound multiple choice questions (MCQ), sound waves in physics quiz questions and answers for online physics terms courses distance learning.

Physics practice test MCQ: humans can hear sound up to highest frequency of 20,000 hz. if wavelength of sound in air at this frequency at temperature of 20° would be with options 5.7×10-2, 3.7×10-2, 1.7×10-2 and 2.7×10-2 for online certificate courses preparation with online teachers certification, competitive exams. Free physics revision notes to learn sound waves in physics quiz with MCQs to find questions answers based online learning tests.

MCQ: Humans can hear sound up to highest frequency of 20,000 Hz. If wavelength of sound in air at this frequency at temperature of 20° would be

1. 5.7×10-2
2. 3.7×10-2
3. 1.7×10-2
4. 2.7×10-2

C

MCQ: In a market, intensity level of sound recorded is 80 dB, intensity level of sound should be

1. 10-4Wm-2
2. 10-6Wm-2
3. 10-8Wm-2
4. 10-5Wm-2

A

MCQ: If a normal conversation have sound intensities of 3×10-6Wm-2. intensity of sound for 100dB would be

1. 0.05 Wm-2
2. 0.01 Wm-2
3. 0.08 Wm-2
4. 0.68 Wm-2

B

MCQ: If a doctor counts 80 heartbeats in 1 minute, then frequency of heartbeats should be

1. 1.33 Hz
2. 1.99 Hz
3. 1.39 Hz
4. 2.33 Hz

A

MCQ: Stethoscopes operate on transmission of

1. electricity
2. signals
3. light
4. sound

D