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Physics 10 Chapter 11 - Sound - 21
1.
Flash of lightning is seen 1.5 s earlier than the thunder. How far away is the cloud in which the flash has occurred? (speed of sound = 332 ms
-1
)
a) 323 m
b) 332 m
c) 489 m
d) 498 m
2.
What is the amplitude level in linear scale for 0 dB in logarithmic scale?
a) 100 amplitude
b) 10 amplitude
c) 1000 amplitude
d) 1 amplitude
3.
What is the decibel level in logarithmic scale for 1 amplitude in linear scale?
a) 40 dB
b) 60 dB
c) 0 dB
d) 20 dB
4.
What is the amplitude level in linear scale for 0 dB in logarithmic scale?
a) 100 amplitude
b) 1000 amplitude
c) 1 amplitude
d) 10 amplitude
5.
What is the decibel level in logarithmic scale for 10 amplitude in linear scale?
a) 20 dB
b) 0 dB
c) 40 dB
d) 60 dB
6.
What is the amplitude level in linear scale for 20 dB in logarithmic scale?
a) 10 amplitude
b) 1000 amplitude
c) 1 amplitude
d) 100 amplitude
7.
What is the decibel level in logarithmic scale for 100 amplitude in linear scale?
a) 60 dB
b) 20 dB
c) 40 dB
d) 0 dB
8.
What is the amplitude level in linear scale for 40 dB in logarithmic scale?
a) 1000 amplitude
b) 100 amplitude
c) 1 amplitude
d) 10 amplitude
9.
What is the decibel level in logarithmic scale for 1000 amplitude in linear scale?
a) 60 dB
b) 40 dB
c) 20 dB
d) 0 dB
10.
How many seconds earlier than the thunder, the flash of lightning is seen?
a) 5.1 s
b) 3.5 s
c) 1.5 s
d) 2.5 s
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