Class 10 Physics MCQs – Practice Test for Exam Prep

Sound Waves in Physics Multiple Choice Questions with Answers – PDF Download

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The MCQ: Humans can hear sound up to the highest frequency of 20,000 Hz. If the wavelength of sound in air at this frequency at a temperature of 20° would be; "Sound Waves in Physics MCQs" App Download [Free] with answers: 5.7×10^-2, 3.7×10^-2, 1.7×10^-2, and 2.7×10^-2 for online certificate programs. Solve Sound Quiz Questions, download Apple Book (Free Chapter) for school certificate.

Sound Waves in Physics MCQs PDF Download – Prep Test

MCQ: 1

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

5.7×10^-2
3.7×10^-2
1.7×10^-2
2.7×10^-2

MCQ: 2

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

10^-4Wm^-2
10^-6Wm^-2
10^-8Wm^-2
10^-5Wm^-2

MCQ: 3

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

0.05 Wm^-2
0.01 Wm^-2
0.08 Wm^-2
0.68 Wm^-2

MCQ: 4

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

1.33 Hz
1.99 Hz
1.39 Hz
2.33 Hz

MCQ: 5

Stethoscopes operate on the transmission of

electricity
signals
light
sound

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