Class 10 Physics MCQs – Practice Test 23 (Chapter 9)

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Free Sound Study App Download (iOS & Android): "Multiple reflections are called"; MCQ with answers: refraction, reverberations, echo, and compressions. Study Importance of Acoustics MCQ Questions, download Google Book (Free Chapter) to improve online educational outcomes.

Sound Quiz – Practice Test 23 PDF Download

MCQ 111: Multiple reflections are called:

reverberations
refraction
echo
compressions

MCQ 112: SONAR ranging is also used to see the object's:

shape only
size only
width
shape and size

MCQ 113: The wavelength of ultrasonic waves is:

very small
very large
zero
negative

MCQ 114: The frequency range for ultrasound is:

20,000 Hz above
less than 20,000 Hz
25,000 Hz
less than 20Hz

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