NCERT Exemplar Class 11 Physics Chapter 2 Motion in a Straight Line provides Free PDF download of NCERT Exemplar Solutions for Class 11 Physics solved by Expert Teachers as per NCERT (CBSE) Book guidelines. All Chapter wise Questions with Solutions to help you to revise complete Syllabus and Score More marks in your examinations.

Q.1. For the one-dimensional motion, described by x = t – sin t.

(a) x(t) > 0 for all t > 0
(b) v(t) > 0 for all r > 0
(c) a(t) > 0 for all t > 0
(d) v(t) lies between 0 and 2

(a) (d)

Q.2. A lift is coming from 8th floor and is just about to reach 4th floor. Taking ground floor as origin and positive direction upwards for all quantities, which one of the following is correct?

(a) x < 0, v < 0, a > 0
(b) x > 0, v < 0, a < 0

(c) x > 0, v < 0, a > 0
(d) x > 0, v > 0, a < 0


Q.3. A spring with one end attached to a mass and the other to a rigid support is stretched and released.

(a) Magnitude of acceleration, when just released is maximum.
(b) Magnitude of acceleration, when at equilibrium position, is maximum.
(c) Speed is maximum when mass is at equilibrium position.
(d) Magnitude of displacement is always maximum whenever speed is minimum

(a) (c)

Q.4. In one dimensional motion, instantaneous speed v satisfies 0 < v < v0

(a) The displacement in time T must always take non-negative values
(b) The displacement x in time T satisfies -v0T < x < v0
(c) The acceleration is always a non-negative number
(d) The motion has no turning points

(b) The displacement x in time T satisfies -v0T < x < v0

Q.5. The displacement of a particle is given by x = (t- 2)2 where x is in metres and t in seconds. The distance covered by the particle in first 4 seconds is

(a) 4 m
(b) 8 m
(c) 12 m
(d) 16 m

(b) 8 m

Q.6. A graph of x versus t is shown in figure.

Choose the correct alternatives given below.
(a) The particle was released from rest at t =0
(b) At B, the acceleration a >0
(c) At C, the velocity and the acceleration vanish.
(d) Average velocity for the motion between Aand D is positive.
(e) The speed at D exceeds that at E


(a) (c) (e)

Q.7. A ball is bouncing elastically with a speed 1 m/s between walls of a railway compartment of size 10 m in a direction perpendicular to the walls. The train is moving at a constant velocity of 10 m/s parallel to the direction of motion of the ball. As seen from the ground

(a) the direction of motion of the ball changes every 10 seconds
(b) speed of ball changes every 10 seconds
(c) average speed of ball over any 20 second interval is fixed
(d) the acceleration of ball is the same as from the train

(b) (c) (d)

Q.8. Among the four graphs shown in the figure, there is only one graph for which average velocity over the time interval (0, 7) can vanish for a suitably chosen T. Which one is it?



NCERT Exemplar Class 11 Physics Solutions

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