Sound

Sound
From the following, the example of a longitudinal wave is
radio wave
sound wave
water wave
heat wave
Author: rikazzz Comment
Sound
Sound waves are produced by
linear motion
circular motion
vibrating bodies
transitional motion
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Sound
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
Author: rikazzz Comment
Sound
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
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Sound
The speed of sound can be found by relation
v = cλ
v = ma
v = fλ
f=¹⁄_T
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Sound
The total distance covered by the sound from the point of generation to the reflecting surface and back should be at least
30 m
34 m
40 m
38 m
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Everyday Science
SONAR is the abbreviation of
small navigation and random
sky navigation and ranging
sun nuclear ranging
sound navigation and ranging
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Sound
We can “see” sound waves by using
stethoscope
microscope
fiberscope
oscilloscope
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Sound
The characteristic of sound by which we distinguish between two sounds of same loudness and pitch is
quality
loudness
frequency
pitch
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Sound
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
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