NCERT Solutions for class 11 Physics Chapter 6: Work, Energy, and Power

NCERT Solutions for Class 11 Physics Chapter 6 Work, Energy, and Power deals with the important concepts of the chapter. Work is referred to as the process of energy that is transferred to an object's motion by applying force. It is generally represented as the product of displacement and force. Power is the amount of energy that is transferred in a unit of time.

Unit 4 Chapter 6 Work, Energy, and Power along with Unit 5 and Unit 6 have a weightage of 17 marks in the Class 11 Physics Examination. The NCERT Solutions for Class 11 Physics Chapter 6 covers Conservative Force, Conservation Of Mechanical Energy, and Relation Between eV And Joule.

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NCERT Solutions for Class 11 Physics Chapter 6

Class 11 Physics Chapter 6 – Concepts Covered

Work is said to be done when a force that is applied to the body displaces it through a certain distance in the direction of the applied force.

It is measured as the product of the force and the distance moved in the direction of the force applied, i.e., W = F.S

If an object undergoes a displacement ‘S’ along a straight line while it is acted on by a force F that makes an angle 0 with S. The work done would then be the product of the magnitude of displacement and the component of force in the direction of displacement.

$W = FScos \theta = \overrightarrow {F}.\overrightarrow {S}$

The energy possessed by a body is its capacity to do work. Energy is measured in the unit Joule.

Mechanical energy can be classified as Kinetic energy and Potential energy.

Kinetic Energy is the energy possessed by a body by virtue of its motion. For an object having mass m and velocity v, the kinetic energy is given by:

Kinetic Energy or KE = ½ mv²

Potential Energy is the energy of a body by virtue of its position or condition.

Potential energy is of two types – gravitational and elastic potential energy.

Class 11 Physics Chapter 6 Related Guides:

Heat	Principle of Conservation of Energy	Elastic and Inelastic Collisions
Pulley	Unit of Power	Types of Energy
Elastic Collision	Unit of Work	Derivation of Kinetic Energy
Pulley System	Types of Springs	Derivation of Work Energy Theorem
Linear Momentum Formula	Mechanical Advantage Formula	Difference between Kinetic and Potential Energy

Class 11 Physics Study Guides:

NCERT Solutions for Class 11 Physics	Class 11 Physics Notes	Physics Study Notes
Difference between in Physics	Derivations in Physics	SI Units in Physics
Relation between articles in Physics	Physics Constants	Physics Formula

CBSE CLASS XII Related Questions

1.
A charged particle $+q$ in an electric field $\vec{E}$ experiences a force in the direction of the electric field. As a result, its kinetic energy changes. Similarly, the charged particle also experiences a force when it moves in a magnetic field $\vec{B}$. But this magnetic force is perpendicular to both velocity $\vec{v}$ of the charged particle and the magnetic field $\vec{B}$, so it cannot change the kinetic energy of the charged particle. Consider two charged particles 1 and 2 of masses $m$ and $\frac{m}{2}$ having charges $-q$ and $+2q$ respectively. They are accelerated from rest through the same potential difference $V$ and acquire kinetic energy $K_1$ and $K_2$. Then they enter in a region of uniform magnetic field $\vec{B}$ perpendicular to their velocities.

2.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

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3.
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.

4.
Consider the nuclear reaction $ X \to Y + Z $. Let $ M_x $, $ M_y $, and $ M_z $ be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

$ (M_x - M_z)<M_y $
$ (M_x - M_y)<M_z $
$ M_x>(M_y + M_z) $
$ M_x<(M_y + M_z) $

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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.
Write two advantages of reflecting telescope over refracting telescope.

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NCERT Solutions for class 11 Physics Chapter 6: Work, Energy, and Power

NCERT Solutions for Class 11 Physics Chapter 6

Class 11 Physics Chapter 6 – Concepts Covered

CBSE CLASS XII Related Questions

2.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

3.
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.

4.
Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

6.
Write two advantages of reflecting telescope over refracting telescope.

Similar Physics Concepts

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NCERT Solutions for class 11 Physics Chapter 6: Work, Energy, and Power

NCERT Solutions for Class 11 Physics Chapter 6

Class 11 Physics Chapter 6 – Concepts Covered

CBSE CLASS XII Related Questions

2.With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

3.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.

4.Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

6.Write two advantages of reflecting telescope over refracting telescope.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

3.
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.

4.
Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

6.
Write two advantages of reflecting telescope over refracting telescope.