# CBSE Class 11 Physics Oscillations MCQs

## Oscillations Class 11 Physics MCQ

Class 11 Physics students should refer to the following multiple-choice questions with answers for Oscillations in standard 11. These MCQ questions with answers for Grade 11 Physics will come in exams and help you to score good marks

### Oscillations MCQ Questions Class 11 Physics with Answers

#### Question: In SHM, the acceleration is directly proportional to

• a) displacement
• b) time
• c) linear velocity
• d) frequency

• a) Zero
• b) 4 A
• c) 2 A
• d) A

#### Question: For a body executing simple harmonic motion, which parameter comes out to be non-periodic ?

• a) None of these
• b) Velocity
• c) Displacement
• d) Acceleration

#### Question: A system exhibiting SHM must possess

• a) elasticity as well as inertia
• b) elasticity, inertia and an external force
• c) elasticity only
• d) inertia only

Answer: elasticity as well as inertia

#### Question: A particle moves in a circular path with a uniform speed. Its motion is

• a) periodic
• b) oscillatory
• c) simple harmonic
• d) angular simple harmonic

#### Question: The motion which is not simple harmonic is

• a) motion of a planet around the Sun
• b) oscillation of liquid column in a U-tube
• c) motion of simple pendulum
• d) vertical oscillations of a spring

Answer: motion of a planet around the Sun

#### Question: Select the incorrect statement(s) from the following.

I. A simple harmonic motion is necessarily periodic.
II. A simple harmonic motion may be oscillatory
III. An oscillatory motion is necessarily periodic

• a) II and III
• b) I and II
• c) I only
• d) I and III

#### Question: 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

#### Question: 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) 5 cm
• b) 7.5 cm
• c) 10 cm
• d) 12.5 cm

#### 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

Answer: Assertion is correct, reason is incorrect

#### Question: The total energy of a particle executing S.H.M. is proportional to

• a) square of amplitude of motion
• b) velocity in equilibrium position
• c) frequency of oscillation
• d) displacement from equilibrium position

Answer: square of amplitude of motion

#### Question: Which of the following is true about total mechanical energy of SHM ?

• a) It is never zero
• b) It is always zero
• c) It is zero at extreme position
• d) It is zero at mean position.

#### Reason : Total energy of particle in SHM remains constant throughout its motion.

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

Answer: Assertion is correct, reason is correct; reason is a correct explanation for assertion

#### Question: A body executes simple harmonic motion. The potential energy (P.E.), the kinetic energy (K.E.) and total energy (T.E.) are measured as a function of displacement x. Which of the following statement is true?

• a) K.E. is maximum when x = 0.
• b) T.E. is zero when x = 0.
• c) K.E. is maximum when x is maximum
• d) P.E. is maximum when x = 0.

Answer: K.E. is maximum when x = 0.

• a) 50 J
• b) 100 J
• c) 12.5 J
• d) 25 J

• a) 3 : 1
• b) 1 : 2
• c) 2 : 1
• d) 1 : 3

• a) 6.28 sec
• b) 12.56 sec
• c) 3.14 sec
• d) 1.57 sec

#### Question: A simple pendulum oscillates in air with time period T and amplitude A. As the time passes

• a) T remains same and A decreases
• b) T decreases and A is constant
• c) T increases and A is constant
• d) T and A both decrease

Answer: T remains same and A decreases

#### Question: Which of the following will change the time period as they are taken to moon?

• a) A simple pendulum
• b) A torsional pendulum
• c) A physical pendulum
• d) A spring-mass system

#### Question: For an oscillating simple pendulum, the tension in the string is

• a) maximum at mean position
• b) constant throughout the motion
• c) cannot be predicted
• d) maximum at extreme position

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