Class 11th Physics
Class 11th Physics
Class 11th Physics
2024
I. Choose the correct answer: 10 X 1 = 10
1. When a car takes a sudden left turn in the curved road, passengers are pushed towards the right
due to (a) inertia of direction (b) inertia of motion (c) inertia of rest (d) absence of inertia
2. An object of mass m held against a vertical wall by applying horizontal force F . The minimum
value of the force F is (a) Less than mg (b) Equal to mg (c) Greater than mg (d) Cannot
determine
3. Two masses m1 and m2 are experiencing the same force where m1 < m2 . The ratio of their
acceleration a1 /a2 is (a) 1 (b) less than 1 (c) greater than 1 (d) all the three cases
4. The lines of forces act at a point is called as (a) concurrent forces (b) co-planar forces (c)
equilibrium
5. If force is the cause then the effect is (a) mass (b) potential energy (c) acceleration (d) Inertia
6. Force acting on the particle moving with constant speed is
(a) always zero (b) need not be zero (c) always non zero (d) cannot be concluded
7. When the object is moving at constant velocity on the rough surface –
(a) net force on the object is zero (b) no force acts on the object
(c) only external force acts on the object (d) only kinetic friction acts on the object
8. Rate of change of momentum of an object is = (a) acceleration (b) work done (c) force (d)
impulse
9. The rate of change of velocity is 1 ms -2 when a force is applied on the body of mass 75 gm the
force is (a) 75 N (b) 0.75 N (c) 0.075 N (d) 0.75 x 10-3 N
10.A book is at rest on the table which exerts a normal force on the book. If this force is considered
as reaction force, what is the action force according to Newton’s third law?
(a) Fg exerted by Earth on the book (b) Fg exerted by the book on Earth (c) N exerted by the
book on the table (d) None of the above