set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

An artificial satellite orbiting the earth does not fall down because the earth’s attraction

a) is balanced by the viscous drag produced by the atmosphere

b) vanishes at such distances

c) is balanced by the attraction of the moon

d) produces the necessary acceleration of its motion in a curved path

Question : 2

A block of ice is floating in a beaker containing liquid of specific gravity greater than one. When ice melts completely what happens to the level of liquid in the beaker?

a) It will rise up

b) It will go down

c) It will remain the same as before

d) It may or may not change depending upon size of beaker

Question : 3

Which one among the following is the correct value of the gravitational force of the Earth acting on a body of mass 1 kg?

a) 89 N

b) 9. 8 N

c) 8. 9 N

d) 98 N

Question : 4

A geostationary satellite

a) must move on an axis in the equatorial plane

b) must move about the polar axis

c) can move about any axis

d) both (b) and (c)