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Online Tests
Physics 9th Class English Medium Unit 5 Online Test MCQs With Answers
Question # 1
The mass of a body is 1 kg, its mass in deep space is :
Choose an answer
1 Kg
0.5 Kg
0.25 kg
0
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Question # 2
The value of g at a height one Earth's radius above the surface of the Earth is
Choose an answer
2 g
1/2 g
1/3 g
1/4 g
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Question # 3
Moon is nearly _________ km away from earth.
Choose an answer
6 x 10
24
380000
199.62 km
30000
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Question # 4
Value of g increases with the:
Choose an answer
Increase in mass of the body
Increases in altitude
decrease the altitude
None of the above
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Question # 5
Moon is nearly km away from the Earth:
Choose an answer
3,80,000 km
3800 km
3,80 km
38 km
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Question # 6
In SI units, the value of gravitational constant 'G' is
Choose an answer
6.673 x 10-9 Nm2 kg-2
6.673 x 10-10 Nm2 kg-2
6.673 x 10-11 Nm2 kg-2
6.673 x 10-12 Nm2 kg-2
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Question # 7
The orbital speed of a low orbit satellite is
Choose an answer
Zero
8 ms-1
800 ms-1
8000 ms-1
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Question # 8
Weight of the body is__________ to the gravity force between body and earth:
Choose an answer
Less than
Greater than
Equal
Constant
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Question # 9
the value of gravitational field strength near the earth is ________ Nkg
-1
.
Choose an answer
1.62
100
10
160
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Question # 10
At the surface of Earth, the acceleration due to gravity 'g' is measured by using the formula
Choose an answer
g = GMe/R
GMe/R2
g = 2GMe/R2
g = GMe/2R
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Question # 11
GPS system consists of earth satellites:
Choose an answer
4
20
24
30
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Question # 12
The earth also completes its one revolution about its axis in.
Choose an answer
1 Hours
6 Hours
13 Hours
24 Hours
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Question # 13
The altitude of geostationary orbits in which communication satellites are launched above the surface of the Earth.
Choose an answer
850 km
1000 km
6400 km
42,300 km
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