EASY
11th West Bengal Board
IMPORTANT
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If the earth stops rotating, the value of g at the equator

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Important Questions on Gravitation

MEDIUM
11th West Bengal Board
IMPORTANT
Average density of the earth
MEDIUM
11th West Bengal Board
IMPORTANT
A person will get more quantity of matter in kgwt at 
HARD
11th West Bengal Board
IMPORTANT

The escape velocity from the earth is 11.2 km/s. The escape velocity from a planet having twice the radius and the same mean density is

EASY
11th West Bengal Board
IMPORTANT
A satellite is launched into a circular orbit of radius R around the earth. A second satellite is launched into an orbit of radius 1.01 R. The period of the second satellite is larger than the first one by approximately
HARD
11th West Bengal Board
IMPORTANT
The distance of a geostationary satellite from the centre of the earth R=6400 km is nearest to
HARD
11th West Bengal Board
IMPORTANT
If the distance between the earth and the sun were half of its present value, the number of days in a year would have been
HARD
11th West Bengal Board
IMPORTANT
An earth satellite S has an orbit radius which is 4 times that of a communication satellite C. The period of revolution of S is
HARD
11th West Bengal Board
IMPORTANT
The period of revolution of a planet A around the sun is 8 times that of planet B. The distance of A is how many times greater than that of B from the sun?