Class 10 Physics MCQs – Practice Test 7 (Chapter 9)

Sound Quiz with Answers PDF Download – Test 7

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The Sound Quiz Questions and Answers PDF (Sound Quiz PDF e-Book) download Ch. 9-7 to learn Class 10 Physics Course. Solve Characteristics of Sound MCQs PDF, Sound Quiz Questions and Answers to study online certification courses. The Class 10 Physics Quiz App Download: Free Sound App to learn characteristics of sound, audible range of human ear, echo of sound, sound waves in physics, sound and sound waves test prep for online schools.

The MCQ: People use the silent whistle to call dogs whose frequency lies between; "Class 10 Physics Quiz" App (iOS, Android) with answers: 20,000 hz to 25,000 hz, 15,000 hz to 18,000 hz, 10,000 hz to 15,000 hz, and 30,000 hz to 35,000 hz to study online certification courses. Study Characteristics of Sound MCQ Questions, download Google Book (Free Chapter) for online high school classes.

Sound Quiz – Practice Test 7 PDF Download

MCQ: 31

People use the silent whistle to call dogs whose frequency lies between

15,000 Hz to 18,000 Hz
20,000 Hz to 25,000 Hz
10,000 Hz to 15,000 Hz
30,000 Hz to 35,000 Hz

MCQ: 32

A human hearing can not hear a sound of frequency less than

20 Hz
30 Hz
10 Hz
40 Hz

MCQ: 33

When sound is incident on the surface of a medium it bounces back into the first medium. The phenomenon is called

refraction of sound
deflection of sound
defraction of sound
reflection of sound

MCQ: 34

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: 35

1 bel is equal to

100 dB
50dB
10dB
20dB

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