NCERT Solutions for class 11 Physics Chapter 14: Oscillations

NCERT Solutions for Class 11 Physics Chapter 14: Oscillations deals with concepts of oscillatory motion. Oscillation is a time-dependent measure of some recurrent variation. Oscillation can be referred to as a body that is in constant motion also known as oscillatory motion when the body moves in a to and fro motion around the same point at a uniform interval of time.

Class 11 Physics Chapter 14 Oscillations belongs to Unit 10 Oscillations and Waves which has a weightage of 10 marks in the CBSE Class 11 Physics Examination. The chapter deals with simple harmonic motion and uniform circular motion.

Download PDF: NCERT Solutions for Class 11 Physics Chapter 14

NCERT Solutions for Class 11 Physics Chapter 14

Class 11 Physics NCERT Solutions for Chapter 14 Oscillations are as given below –

Class 11 Physics Chapter 14 – Concepts Covered

Oscillations are regular variations in magnitude or position about a central point, especially of a voltage or an electric current.

It is the back and forth movement in a regular rhythm. For example, the pendulum of a clock, in a swing, etc.

Periodic Motion is a periodically repeating motion that is a function of time.

- Time Period refers to the period of time after which the motion repeats itself.

- Frequency is the number of repetitions per unit of time (v = 1/T).

Oscillatory Motions is the to and fro, and then back motion. It can be seen in both non-periodic and periodic motion.

Oscillatory motions operate upon a restoring force or torque that directs its motion towards the equilibrium position.

Simple Harmonic Motions are oscillations where the restoring force is directly proportional to the displacement from the mean position, therefore creating a fixed set of motion.

Three primary conditions that are required for a simple harmonic motion are-

A position where there is a stable equilibrium that results from a zero potential energy.
The energy is conserved, i.e., ther is no dissipation of energy.
The acceleration is proportional to the displacement.

A simple pendulum is a common example of bodies showing simple harmonic motion. An ideal pendulum consists of a heavy point mass body that is suspended by a weightless inextensible and perfectly flexible string from rigid support about which the body is free to oscillate.

The time period of a simple pendulum of length ‘l’ is –

\(T = 2 \pi \sqrt {l \over g}\)

Class 11 Physics Chapter 14 Related Guides –

Free, Forced, and Damped Oscillations	Transverse and longitudinal waves	Beats
Doppler effect	Longitudinal Waves	Transverse Waves
Unit of Wavelength	Laplace Correction	Wave Motion

Class 11 Physics Study Guides:

Physics Constants	SI Units in Physics	Physics Study Notes
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Derivations in Physics	NCERT Solutions for Class 11 Physics	Class 11 Physics Notes

CBSE CLASS XII Related Questions

1.
If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.
View Solution
2.
Assertion (A) : All atoms have a net magnetic moment. Reason (R) : A current loop does not always behave as a magnetic dipole.
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- Assertion (A) is true, but Reason (R) is false.
- Both Assertion (A) and Reason (R) are false.
View Solution
3.
Write the expression for the magnetic field due to a current element in vector form. Consider a 1 cm segment of a wire, centered at the origin, carrying a current of 10 A in positive x-direction. Calculate the magnetic field \( \mathbf{B} \) at a point \( (1 \, \text{m}, 1 \, \text{m}, 0) \).
View Solution
4.
A long solenoid of length \( L \) and radius \( r_1 \) having \( N_1 \) turns is surrounded symmetrically by a coil of radius \( r_2 \, (r_2>r_1) \) having \( N_2 \) turns (\( N_2 \ll N_1 \)) around its mid-point. Derive an expression for the mutual inductance of solenoid and coil. Is \( M_{12} = M_{21} \) valid in this case?
View Solution
5.
What is displacement current (\( i_d \))? Considering the case of charging of a capacitor, show that \( i_d = \varepsilon_0 \frac{d\Phi_E}{dt} \). What is the value of \( i_d \) for a conductor across which a constant voltage is applied?
View Solution
6.
Four independent waves are expressed as \[ (i)\; y_1=A_1\sin\omega t, \] \[ (ii)\; y_2=A_2\sin 2\omega t, \] \[ (iii)\; y_3=A_3\cos\omega t, \] \[ (iv)\; y_4=A_4\sin\left(\omega t+\frac{\pi}{3}\right) \] The interference between two of these waves is possible in
- (i) and (iii) only
- (iii) and (iv) only
- (i), (iii) and (iv) only
- All of them
View Solution

View All

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NCERT Solutions for class 11 Physics Chapter 14: Oscillations

NCERT Solutions for Class 11 Physics Chapter 14

Class 11 Physics Chapter 14 – Concepts Covered

CBSE CLASS XII Related Questions

1.
If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.

2.
Assertion (A) : All atoms have a net magnetic moment. Reason (R) : A current loop does not always behave as a magnetic dipole.

3.
Write the expression for the magnetic field due to a current element in vector form. Consider a 1 cm segment of a wire, centered at the origin, carrying a current of 10 A in positive x-direction. Calculate the magnetic field \( \mathbf{B} \) at a point \( (1 \, \text{m}, 1 \, \text{m}, 0) \).

5.
What is displacement current (\( i_d \))? Considering the case of charging of a capacitor, show that \( i_d = \varepsilon_0 \frac{d\Phi_E}{dt} \). What is the value of \( i_d \) for a conductor across which a constant voltage is applied?

6.
Four independent waves are expressed as \[ (i)\; y_1=A_1\sin\omega t, \] \[ (ii)\; y_2=A_2\sin 2\omega t, \] \[ (iii)\; y_3=A_3\cos\omega t, \] \[ (iv)\; y_4=A_4\sin\left(\omega t+\frac{\pi}{3}\right) \] The interference between two of these waves is possible in

Similar Physics Concepts

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NCERT Solutions for class 11 Physics Chapter 14: Oscillations

NCERT Solutions for Class 11 Physics Chapter 14

Class 11 Physics Chapter 14 – Concepts Covered

CBSE CLASS XII Related Questions

1. If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.

2.Assertion (A) : All atoms have a net magnetic moment. Reason (R) : A current loop does not always behave as a magnetic dipole.

3.Write the expression for the magnetic field due to a current element in vector form. Consider a 1 cm segment of a wire, centered at the origin, carrying a current of 10 A in positive x-direction. Calculate the magnetic field \( \mathbf{B} \) at a point \( (1 \, \text{m}, 1 \, \text{m}, 0) \).

5.What is displacement current (\( i_d \))? Considering the case of charging of a capacitor, show that \( i_d = \varepsilon_0 \frac{d\Phi_E}{dt} \). What is the value of \( i_d \) for a conductor across which a constant voltage is applied?

6.Four independent waves are expressed as \[ (i)\; y_1=A_1\sin\omega t, \] \[ (ii)\; y_2=A_2\sin 2\omega t, \] \[ (iii)\; y_3=A_3\cos\omega t, \] \[ (iv)\; y_4=A_4\sin\left(\omega t+\frac{\pi}{3}\right) \] The interference between two of these waves is possible in

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.

2.
Assertion (A) : All atoms have a net magnetic moment. Reason (R) : A current loop does not always behave as a magnetic dipole.

3.
Write the expression for the magnetic field due to a current element in vector form. Consider a 1 cm segment of a wire, centered at the origin, carrying a current of 10 A in positive x-direction. Calculate the magnetic field \( \mathbf{B} \) at a point \( (1 \, \text{m}, 1 \, \text{m}, 0) \).

5.
What is displacement current (\( i_d \))? Considering the case of charging of a capacitor, show that \( i_d = \varepsilon_0 \frac{d\Phi_E}{dt} \). What is the value of \( i_d \) for a conductor across which a constant voltage is applied?

6.
Four independent waves are expressed as \[ (i)\; y_1=A_1\sin\omega t, \] \[ (ii)\; y_2=A_2\sin 2\omega t, \] \[ (iii)\; y_3=A_3\cos\omega t, \] \[ (iv)\; y_4=A_4\sin\left(\omega t+\frac{\pi}{3}\right) \] The interference between two of these waves is possible in