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Physics English Medium Fsc Part 1 Chapter 8 Online MCQs Test MCQs With Answers
Question # 1
In stationary waves, the particle velocity at nodes is
Choose an answer
Minimum
Maximum
Zero
Constant
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Question # 2
The speed of sound in air would become double than ots speed at 10
o
C at a temperature of.
Choose an answer
313
o
C
586
o
C
859
o
C
899
o
C
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Question # 3
When ever the path difference between the waves is integral multiple of half the wavelength, interference will be
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Constructive
Destructive
(-)ve
(+) ve
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Question # 4
If the wave motion is 0.01 sec and wave speed is 100 ms-1 then frequency of wave is.
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0.5 Hz
1 Hz
10 Hz
100 Hz
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Question # 5
The process followed by Newton for the determination of speed of sound in air is
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Adiabatic
Isothermal
Isobaric
Isochoric
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Question # 6
A stretched string 2 m long and it has 2 hopes of stationary waves hen the wavelength is
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4 m
2 m
3 m
1 m
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Question # 7
In vibrating string, the points where the amplitude is maximum are called.
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Nodes
Antinodes
Troughs
Crests
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Question # 8
In which medium the speed of sound is greater.
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Oxygen
Air
Water
copper
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Question # 9
If 30 waves per second pass through a medium at a speed 30 ms-1, then the wavelength is.
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30 m
15 m
1 m
28 m
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Question # 10
Which of the following is mechanical wave
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Heat
Light
Sound
None of these
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