Class 10 Physics MCQs - Chapter 9

Sound Multiple Choice Questions (MCQs) PDF Download - 21

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The Sound Multiple Choice Questions (MCQs) with Answers PDF (sound MCQs PDF e-Book) download Ch. 9-21 to study Grade 10 Physics Course. Learn Sound Quiz Questions and Answers to learn online certification courses. The Sound MCQs App Download: Free learning app for characteristics of sound, noise pollution, sound waves in physics, echo of sound test prep for online teaching certification programs.

The MCQ: A normal conversation have sound intensities of 3×10^-6Wm^-2. The decibel level for the intensity is; "Sound" App Download (Free) with answers: 64.8 dB; 50 dB; 70.5 dB; 48.8 dB; to learn online certification courses. Solve Characteristics of Sound MCQ Questions, download Google eBook (Free Sample) for distance learning classes.

Sound MCQs with Answers PDF Download: Quiz 21

MCQ 101:

A normal conversation have sound intensities of 3×10^-6Wm^-2. The decibel level for the intensity is

50 dB
64.8 dB
70.5 dB
48.8 dB

MCQ 102:

The level of noise recommended in most countries over an eight-hour workday is usually

65-70 dB
85-90 dB
75-80 dB
45-50 dB

MCQ 103:

If a nurse counts 68 heartbeats in 1 minute, then the period of heartbeats should be

1.9 s
2 s
0.88 s
3 s

MCQ 104:

Human voice results from the vibration of

ears
heart
vocal chords
muscles

MCQ 105:

As compare to air, sound waves travel

3 times faster
5 times slower
5 times faster
2 times lower

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