All Solved MCQs of Chapter 3 Dynamics Class 11
Section (A): Multiple Choice Questions (MCQs)
l. The rate of change of linear momentum of a
body is called a:
a) Linear force b) Angular force c) Power d)
Impulse
2. The term mass refers to the same physical
concept as:
a) Weight b) inertia c) force d) acceleration
3. Which one of the following force is also
called as self adjusting for
a) Frictional force b) tension c) Weight d)
Thrust
4. The laws of motion show the relationship
between:
a) Velocity and acceleration b) mass and velocity
c) mass and acceleration d) force and acceleration
5. The motion of rocket in the space is according to the law of conservation of:
a)
Energy b) linear momentum c) Mass d) angular momentum
6. A bomb of mass 12 kg initially at rest
explodes into two pieces of masses 4kg and 8kg. The speed of 8kg mass is 6 m/s.
The kinetic energy of 4 kg mass is:
a)32J b)48J c)114J d)288J
7. If momentum is increased by 20% then K.E
increases by:
a)44% b)55% c) 66% d) 77%
8. The kinetic energy of body of mass 2kg and
momentum of 2 Ns is:
a)1J b)2J c)3J d)4J
9. For the same kinetic energy, the momentum is
maximum for:
a) an electron b) a proton c) a deuteron d) alpha particle
10. A 3kg bowling ball experiences a net force
of 15N. What will be its acceleration?
a) 35 m/s2 b) 7 m/s2 c) 5 m/s2 d) 35 m/s2
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