Sound

Sound
Pitch of the sound depends upon
frequency
distance of sound
amplitude
temperature
Author: rikazzz Comment
Everyday Science
If a doctor counts 80 heartbeats in 1 minute, then the frequency of heartbeats should be
1.33 Hz
1.99 Hz
1.39 Hz
2.33 Hz
Author: rikazzz Comment
Everyday Science
The speed of sound in the liquid is
2 times that in gas
3 times that in gas
5 times that in gas
8 times that in gas
Author: rikazzz Comment
Sound
The total distance covered by a sound wave from the generation point to reflecting surface and back should be
17m
34m
15m
10m
Author: rikazzz Comment
Sound
1 bel is equal to
100 dB
50dB
10dB
20dB
Author: rikazzz Comment
Sound
The wavelength of ultrasonic waves is
more than audible sound
less than audible sound
equal to audible sound
greater than light wave
Author: rikazzz Comment
Sound
The characteristic of sound by which loud and faint sounds can be distinguished is
Pitch
Quality
Frequency
Loudness
Author: rikazzz Comment
Sound
If the intensity of rustle leaves is 10^-11 Wm^-2 then intensity level due to rustling is
10dB
11dB
100dB
50dB
Author: rikazzz Comment
Sound
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
Author: rikazzz Comment
Everyday Science
The speed of sound varies with
humidity only
temperature only
pressure
humidity and temperature
Author: rikazzz Comment

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