1
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of energy required to raise a satellite of mass $$m$$ to a height $$h$$ above the earth's surface of that required to put it into the orbit at same height is [$$R=$$ radius of the earth]

A
$$\frac{h}{R}$$
B
$$\frac{3 h}{R}$$
C
$$\frac{4 h}{R}$$
D
$$\frac{2 h}{R}$$
2
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

As we go from the equator of the earth to pole of the earth, the value of acceleration due to gravity

A
decreases
B
decreases up to latitude of $$45^{\circ}$$ and increases thereafter
C
remains same
D
increases
3
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

The mass of earth is 81 times the mass of the moon and the distance between their centres is $$R$$. The distance from the centre of the earth, where gravitational force will be zero is

A
$$\frac{R}{4}$$
B
$$\frac{R}{2}$$
C
$$\frac{9 R}{10}$$
D
$$\frac{R}{81}$$
4
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

A body is thrown from the surface of the earth velocity $$\mathrm{v} / \mathrm{s}$$. The maximum height above the earth's surface upto which it will reach is ($$R=$$ radius of earth, $$g=$$ acceleration due to gravity)

A
$$\frac{v R}{2 g R-v}$$
B
$$\frac{2 g A}{v^2(R-1)}$$
C
$$\frac{v R^2}{g R-v}$$
D
$$\frac{v^2 R}{2 g R-v^2}$$
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