Entry Test MCQ :: Circular Motion

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31.

moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be

A.	??R	B.	2??R
C.	zero	D.	4??R

32.

A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is

A.	mg	B.	mg - ma
C.	mg + ma	D.	mg - ma

33.

Who discovered the inverse square law for gravity?

A.	Einstein	B.	Galileo
C.	Newtons	D.	Plank

34.

The planet nearest to the earth is

A.	Venus	B.	Mercury
C.	Uranus	D.	Sun

35.

A satellite moving round the earth constitutes

A.	An inertial frome of reference	B.	non inertial frame
C.	neither inertial nor non inertial	D.	both inertial and non inertial

36.

Minimum number of communication satellites required to cover the whole carth is

A.	4	B.	3
C.	2	D.	5

37.

A body of 2 kg is suspended form the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be

A.	9.8 N	B.	19.6 N
C.	129.4 N	D.	39.2 N

38.

If a body of mass 10 kg is allowed to fall freely, its weight becomes

A.	zero	B.	89N
C.	9.8 N	D.	10N

39.

How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit)?

A.	365 days	B.	730 days
C.	329 days	D.	129 days

40.

When a body is moving along a circular path it covers a certain angle in a given internal of time. Such type of motion is

A.	vibratory motion	B.	linear motion
C.	rotatory motion	D.	angular motion