# Sound Waves in Physics Questions and Answers PDF Book Download

Sound waves in physics MCQs, sound waves in physics quiz answers for online high school courses. Sound multiple choice questions (MCQs), sound waves in physics quiz questions and answers for online school degrees. Characteristics of sound, sound wave and speed, speed of sound, sound waves in physics test prep for high school teacher certification.

Learn physics MCQs: 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 choices 5.7×10-2, 3.7×10-2, 1.7×10-2, and 2.7×10-2 for online school degrees. Free physics student portal for online learning sound waves in physics quiz questions, MCQs to find questions answers based online learning tests.

## MCQ on Sound Waves in Physics PDF Book Download

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