Force : Quiz

                           OBJECTIVE

M.C.Q'S 
1. In balanced force-
A. Speed is zero
B. Speed is non-zero
C. It cannot change speed of a body
D. Both A and C

2. Friction is example of
A. contact force
B. non-contact force
C. both a and b
D. none of these

3. If force applied to an object is 100 N and acceleration is 20m/s sq. then find the mass.
A. 10kg
B.  5kg
C. 10g
D. 5g

4. Force applied= ?
A. mass 
B. acceleration
C. mass x acceleration
D. mass x speed 

5. Force is directly proportional to
A. mass
B. pressure
C. acceleration
D. rate of change of momentum

6. Force is a 
A. scalar quantity
B. vector quantity
C. both of these
D. none of these

7. C.G.S unit of force is
A. Newton 
B. Dyne
C. kgf
D. gf 

8. The tendency to be in a state of rest or in motion or in direction is 
A. Inertia of rest
B. Inertia of motion
C. Inertia of direction 
D. All the above

9. ------------------- is an external effort in the form of push or pull.
A. Force
B. Pressure
C. Inertia
D. None of the above

10. When charged particle exerts force on to another charged /non-charged then it is 
A. Friction
B. Electrostatic force
C. Muscular force
D. All the above

Fill in the blanks

1. When charged bodies attract non-charged bodies then the force is-
2. The Quantitative measurement of force is given by Newton's ----- law.
3. When a arrow is stretched there is change in -------.
4. If a body of mass 5kg applies a force of 10N then find the acceleration of the body.
5. Force is defined in Newton's ---- law.
6.Type of  Force applied by earth on sun is ----------
7.To draw water from a well we have to ——— at the rope.
 8.A charged body ———— an uncharged body towards it.
 9.To move a loaded trolley we have to ———— it.(d) The north pole of a magnet ———— the north pole of another magnet.
10. Force is mass multiplied by --------------.
 
                                SUBJECTIVE
1.Give two examples each of situations in which you push or pull to change
the state of motion of objects.
2.Give two examples of situations in which applied force causes a change in
the shape of an object.
3.State newtons all three laws.
4.What do you mean by Inertia of rest?
5.Give differences between Mass & Weight