1
AIEEE 2003
+4
-1
The time period of satellite of earth is $$5$$ hours. If the separation between the earth and the satellite is increased to $$4$$ times the previous value, the new time period will become
A
$$10$$ hours
B
$$80$$ hours
C
$$40$$ hours
D
$$20$$ hours
2
AIEEE 2003
+4
-1
The escape velocity for a body projected vertically upwards from the surface of earth is $$11$$ $$km/s.$$ If the body is projected at an angle of $${45^ \circ }$$ with the vertical, the escape velocity will be
A
$$11\sqrt 2 \,\,km/s$$
B
$$22$$ $$km/s$$
C
$$11$$ $$km/s$$
D
$${{11} \over {\sqrt 2 }}km/s$$
3
AIEEE 2003
+4
-1
Two spherical bodies of mass $$M$$ and $$5M$$ & radii $$R$$ & $$2R$$ respectively are released in free space with initial separation between their centers equal to $$12R$$. If they attract each other due to gravitational force only, then the distance covered by the smaller body just before collision is
A
$$2.5$$ $$R$$
B
$$4.5$$ $$R$$
C
$$7.5$$ $$R$$
D
$$1.5$$ $$R$$
4
AIEEE 2002
+4
-1
If suddenly the gravitational force of attraction between Earth and a satellite revolving around it becomes zero, then the satellite will
A
continue to move in its orbit with same velocity
B
move tangentially to the original orbit with the same velocity
C
become stationary in its orbit
D
move towards the earth
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