MCQ Questions for Class 11 Physics Chapter 14 Oscillations with Answers

Here you will find NCERT MCQ Questions for Class 11 Physics with Answers PDF Free Download based on the important concepts and topics given in the textbook as per CBSE new exam pattern. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Class 11 Physics. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

Q1. In damped oscilation, the angular frequency of the oscillator

(a) keeps on decreasing
(b) keeps on increasing
(c) emains the same
(d) fluctuates

Q2. The acceleration of particle executing S.H.M. when it is at mean position is

(a) Infinite
(b) Varies
(c) Maximum
(d) Zero

(d) Zero

Q3. In SHM, graph of which of the following is a straight line?

(a) T.E. against displacement
(b) P.E. against displacement
(c) Acceleration against time
(d) Velocity against displacement

(a) T.E. against displacement

Q4. The period of thin magnet is 4 sec. if it is divided into two equal halves then the time period of each part will be

(a) 4 sec
(b) 1 sec
(c) 2 sec
(d) 8 sec

Q5. If the length of seconds pendulum is increased by 2%, how may seconds it will lose per day?

(a) 3427 sec
(b) 3727 sec
(c) 3927 sec
(d) 864 sec

(d) 864 sec

Q6. Length of a simple pendulum executing simple harmonic motion is increased by 21%. The percentage increase in the time – period of the pendulum of increased length is

(a) 10%
(b) 1%
(c) 21%
(d) 42%

(a) 10%

Q7. If a simple harmonic oscillator has got a displacement of 0.02 m and acceleration equal to 2.0 ms-2 at any time, the angular frequency of the oscillator is equal to

(a) 10 rad s-1
(b) 1 rad s-1
(c) 100 rad s-1
(d) 1 rad s-1

(a) 10 rad s-1

Q8. In damped oscilation the directions of the restoring force and the resistive force

(a) are the same
(b) are opposite
(c) may be same or opposite
(d) have no relation with each other

Q9. The displacement y of a particle executing periodic motion is given by y = 4 cos² (t/2) sin (1000t). This expression may be considered to be a result of superposition of the following number of harmonic motions.

(a) two
(b) three
(c) four
(d) five

(b) three

Q10. Spring is pulled down by 2 cm. What is amplitude of motion?

(a) 0 cm
(b) 6 cm
(c) 2 cm
(d) cm

Q11. One of the two clocks on the earth is controlled by a pendulum and other by a spring. If both the clocks are taken to the moon, then which clock will have the same time – period of the earth?

(a) spring clock
(b) pendulum clock
(c) both
(d) none

(a) spring clock

Q12. When a particle performing uniform circular motion of radius 10 cm undergoes the SHM, what will be its amplitude?

(a) 10 cm
(b) 5 cm
(c) 2.5 cm
(d) 20 cm

(a) 10 cm

Q13. For a magnet of time period T magnetic moment is M, if the magnetic moment becomes one fourth of the initial value, then the time period of oscillation becomes.

(a) Half of initial value
(b) One fourth of initial value
(c) Double of initial value
(d) Four time initial value

Q14. Time period of simple pendulum of length l and a place where acceleration due to gravity is g is T. what is the period of a simple pendulum of the same length at a place where the acceleration due to gravity is 1.029 is,

(a) T
(b) 1.02 T
(c) 0.99 T
(d) 1.01 T

Q15. Suppose a tunnel is dug along a diameter of the earth. A particle is dropped from a point, a distance h directly above the tunnel, the motion of the particle is

a) oscillatory
b) simple harmonic
c) parabolic
d) non-periodic

a) oscillatory

Q16. The graph plotted between the velocity and displacement from mean position of a particle executing SHM is

a) ellipse
b) straight line
c) circle
d) parabola

a) ellipse

Q17. A body executing linear simple harmonic motion has a velocity of 3 m/s when its displacement is 4 cm and a velocity of 4 m/s when its displacement is 3 cm. What is the amplitude of oscillation ?

a) 5 cm
b) 7.5 cm
c) 10 cm
d) 12.5 cm

a) 5 cm

Q18. Assertion : A particle executing simple harmonic motion comes to rest at the extreme positions .
Reason : The resultant force on the particle is zero at these positions

a) Assertion is correct, reason is incorrect
b) Assertion is incorrect, reason is correct
c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

a) Assertion is correct, reason is incorrect

Q19. In damped oscilation the directions of the restoring force and the resistive force