10th Science Chapter -01 Laws of Motion Creative One Mark Question and Answers Part-05
10th Science Chapter -01 Laws of Motion Creative One Mark Question and Answers Part-05
01.The linear momentum of a system of particles is always conserved
a) true
b) false
Correct answer
false
02.The unit of force and impulse is same
a) true
b) false
Correct answer
true
03.A force of 20 N is acting on an object of mass 10 Kg. The acceleration produced is
a) 1 ms^_2
b) 2 ms^_2
c) 20 ms^_2
d) 10 ms^_2
Correct answer
2 ms^_2
04.What would happen if the force of gravity disappears suddenly on earth
a) All objects would move in a rapid whirl wing
b) All object will float
c) not possible
d) cannot say
Correct answer
All objects would move in a rapid whirl wing
05.Which of the following statement is not correct for an object moving along a straight path in an accelerated motion
a) its speed keeps changing
b) its velocity always changes
c) it always goes away from the earth
d) A force is always acting on it
Correct answer
it always goes away from the earth
06.The physical quantity which is equal to change in momentum is
a) velocity
b) acceleration
c) force
d) impulse
Correct answer
impulse
07.A body is said to be under balanced force when the resultant force applied on that body is
a) Zero
b) infinite
c) ore
d) none
Correct answer
Zero
08.Newtons III law is applicable
a) For a body is rest
b) For a body in motion
c) Both a&B
d) only for bodies with equal masses
Correct answer
Both a&B
09.There is no gravity in the orbiting space station around the earth so the astronauts feel weightlessness
a) true
b) false
Correct answer
false
10.The gravitation force of earth acting on a body of mass 1 Kg is
a) 8.9 N
b) 9.8 N
c) 980 N
d) 1 N
Correct answer
9.8 N
11.The physical quantity whichi equal to change in momentum is
a) displacement
b) acceleration
c) force
d) impulse
Correct answer
force
12.The value of 'g' is maximum at the equatorial region and minimum in the polar region
a) true
b) false
Correct answer
false
13.Galileo suggested that an external force is required to keep a body in uniform motion
a) true
b) false
Correct answer
false
14.Turning a nut with a spanner having a short handle is so easy than one with a long handle
a) true
b) false
Correct answer
false
15.The value of g
a) increase as we go above the earth's surface
b) decreases as we go to the center of the earth
c) remains constant
d) is more at equator and less at poles
Correct answer
decreases as we go to the center of the earth