10th Science Chapter -01 Laws of Motion Creative Question and Answer Part -06

10th Science  Chapter -01 Laws of Motion Creative Question and Answer Part -06

01.Newton's law of gravitation applies to

a) small bodies
b) plants only
c) all bodies irrespective of their size
d) for solar system

Correct answer
all bodies irrespective of their size





02.At surface of earth an object falling freely experience an accleration of

a) 9.4 ms^_2
b) 9.1 ms^_1
c) 9.8 ms^_2
d) 9.6 ms^_2

 Correct answer
9.8 ms^_2

03.The mass of a body os measured on plant Earth as M Kg.when it is taken to a plant of radius half that of Earth then its value will be-------Kg

a) 4M
b) 2m
c) M/4
d) M

Correct answer
M/4

04.Acceleration due to gravity can also be expressed as g = GM /R^2

a) true
b) false

Correct answer
true

05.Two bodies of different masses are allowed to fall freely from the same height then both the bodies reach the earth together

a) true
b) false

 Correct answer

06.The SI unit of force is

a) energy
b) joule
c) newton
d) dyne

Correct answer
newton


07.Study of moving bodies under the action of forces______

a) Statics
b) Kinematics
c) Dynamics
d) Mechanics

Correct answer
Dynamics

08.A body of mass Kg is attracted he earth with a force which is equal to

a) 9.8 N
b) 6.67X10^11
c) 1 N
d) 9.8 ms^ _1

Correct answer
9.8 N

09.The motion of falling bodies towards earth is due to

a) gravitational rotation
b) weightless mass
c) acceleration due to gravity
d) gravitational force

Correct answer
gravitational force

10.The resultant of action & reaction force is _____

a) greater than zero
b) less than zero
c) zero
d) ore

Correct answer
zero