set 4 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 5 EXERCISES
The following question based on mechanics (mass, force, acceleration, work, energy, momentum, velocity) topic of general science mcq
(a) 2 r
(b) pr
(c) zero
(d) 2pr
The correct answers to the above question in:
Answer: (a)
Practice mechanics (mass, force, acceleration, work, energy, momentum, velocity) (set 4) Online Quiz
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Question : 1
A man getting down a running bus, falls forward because-
a) he leans forward as a matter of habit
b) due to inertia of motion upper part of body continues to be in motion in forward direction while feet come to rest as soon as they touch the road
c) due to inertia of rest, road is left behind and man reaches forward
d) of the combined effect of all the three factors stated in (a), (b) and (c)
Answer »Answer: (a)
Question : 2
Gravitational potential energy of an object will
a) not effected by changing the path, provided the overall height is same
b) decrease by increasing the path along which the object is moved
c) increase by increasing the path along which the object is moved
d) None of these
Answer »Answer: (a)
Question : 3
It is difficult to cut things with a blunt knife because
a) a blunt knife decreases the pressure for a given force
b) a sharp edge decreases the pressure exerted by knife for a given force
c) the pressure exerted by knife for a given force increases with increase in bluntness
d) a blunt knife decreases the area of intersection
Answer »Answer: (a)
Question : 4
Newton’s laws of motion do not hold good for objects
a) moving with high velocity
b) moving slowly
c) at rest
d) moving with velocity comparable to velocity of light
Answer »Answer: (d)
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