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Physics Chapter 5 MCQs Notes
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Class 9 Physics Chapter 5 Gravitation MCQs
1: Earth’s gravitational force of attraction vanishes at
(a) 6400 km
(c) 42300 km
(d) 1000 km
2: The value of g increases with the
(a) increase in mass of the body
(b) increase in altitude
(c) decrease in altitude
(d) none of the above
3: The value of g at a height Earth’s radius above the surface of the Earth is:
4: The value of g on the moon’s surface 2 is 1.6 ms. What will be the weight of a 100 kg body on the surface of the moon?
(a) 100 N
(b) 160 N
(c) 1000 N
(d) 1600 N
5: The altitude of geostationary orbits in which communication satellites are launched above the surface of the Earth is:
(a) 850 km
(b) 1000 km
(c) 6400 km
(d) 42,300 km
6: The orbital speed of a low-orbit satellite is:
(b) 8 ms
(c) 800 ms
(d) 8000 ms
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