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
Difference between in Physics	Relation between articles in Physics	Physics Formula
Derivations in Physics	NCERT Solutions for Class 11 Physics	Class 11 Physics Notes

CBSE CLASS XII Related Questions

1.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

The total charge of the two spheres is conserved.
Both spheres attain the same potential.
The final potential of the system equals $\frac{1}{4\pi\epsilon_0} \frac{(q_1 + q_2)}{(r_1 + r_2)}$
The final potential of the system equals $\frac{1}{4\pi\epsilon_0} \frac{(q_1 + q_2) (r_1 + r_2)}{r_1 r_2}$

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2.
Capacitors are manufactured with certain standard capacitances and working voltages. However, these standard values may not be the ones that are actually needed in a particular application. Two or more capacitors can be grouped in series or in parallel to achieve desired capacitance and voltage. When connected in series, the total capacitance decreases while the voltage rating increases, whereas in parallel connections, the total capacitance increases and maintains the same voltage rating. A capacitor stores energy in the electric field between its plates and stored energy is proportional to the square of the voltage and capacitance $U = \frac{1}{2}CV^2$, where symbols have their usual meanings.
Two capacitors, one of $3 \ \mu$F and the other of $6 \ \mu$F, are connected in series in the circuit as shown in the figure, for a long time. }

3.
Two air-filled capacitors of capacitances $C_1$ and $C_2$ are connected in parallel with a dc battery. After the capacitors are fully charged, a slab of dielectric constant K is inserted between the plates of each capacitor. How will the (i) charge on each capacitor and (ii) energy stored in the capacitor affected after the slab is introduced.

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4.
An astronomical telescope consists of two converging lenses. One of them of large aperture and large focal length is called objective lens and the other one, of smaller focal length and smaller aperture is called the eyepiece. It is used to see distant objects which are not seen clearly with naked eyes. The image formed by the objective lens acts as an object for the eyepiece and the final image produced by the eyepiece is magnified.

5.
Read the following paragraph and answer the questions that follow.
A p-type or n-type semiconductor can be converted into a p-n junction by doping it with suitable impurity. The motion of majority charge carriers causes diffusion current across the junction while the barrier electric field causes motion of minority carriers for drift current. In case of unbiased diode, the diffusion and drift currents are equal. This equilibrium is disturbed by the biasing batteries. Diodes, therefore, allow currents in one direction. This property of diode is used in making rectifiers.

6.
A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

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.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

6.
A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

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.Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

6.A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Two metal spheres of radii $r_1$ and $r_2$ ($> r_1$) having charges $q_1$ and $q_2$ respectively kept in air, are brought in contact. Which of the following statements is not correct ?

6.
A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.