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Subjects
Science Test Space
Class 10
Acoustics
Sound waves and reflection of sound
5.
Velocity of sound waves
Question:
4
m.
Textbook questions
:
Choose the best answer:
1
.
When a sound wave travels through air, the air particles __________.
do not vibrate
vibrate along the direction of the wave motion
vibrate but not in any fixed direction
vibrate perpendicular to the direction of the wave motion
2
.
The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?
speed
frequency
wavelength
none of these
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