NCERT Solutions For Class 11 Physics Chapter 1 : Physical World

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NCERT Solutions for Class 11 Physics Chapter 1 Physical World deals with the matters and the materials around the world, where the laws of physics are being applied in nature. The Physical world around us is full of different complex natural phenomena. These are based on some basic physical laws that govern their working in nature.

The chapter has been omitted from the CBSE Class 11 Physics Syllabus 2022-2023. Class 11 Physics Chapter 1 deals with the scope of physics and technology in society, gravitational force, electromagnetic force, and strong and weak nuclear force. It also covers the nature of physical laws.

Download PDF: NCERT Solutions for Class 11 Physics Chapter 1

NCERT Solutions for Class 11 Physics Chapter 1

Class 11 Physics Chapter 1 – Important Concepts

Physics is a fundamental science that is concerned with understanding the natural phenomena that occur in the universe.

The various branches of Physics include – Mechanics, Thermodynamics, Electromagnetism, and Modem Physics.

The scope of Physics covers a magnitude of physical quantities such as mass, length, time, energy, and so on.

Physics deals with the macroscopic world such as the universe and galaxies as well as the microscopic world such as the nucleus of an atom.

Gravitational force is the force of attraction between any 2 bodies that is directly proportional to the product of their masses. It is inversely proportional to the square of the distance between them.

$\begin{array}{l}F\propto \frac{(m_{1}m_{2})}{r^{2}}\end{array}$

Electromagnetic Force is a physical interaction occurring between electrically charged particles.

Electromagnetic Force can be either attractive or repulsive.

Nuclear force is a force that acts between the neutrons and protons of atoms.

The nuclear force is the force that binds the nucleus together.

Class 11 Physics Related Topics:

Difference between discovery and invention	Equivalence Principle	Scientific Investigation
Statistical Mechanics	Hubble’s Law	Units of measurement
Systems of units	Length, mass and time measurements	Accuracy and precision of measuring instruments

Physics Study Guides:

Physics Study Material	Physics Formula	Comparison articles in Physics
Derivations in Physics	Physics Study Material	Physics Constants

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.
Write two advantages of reflecting telescope over refracting telescope.

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3.
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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4.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

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5.
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.

6.
The resistance of a metal wire at $ 20^\circ \text{C} $ is $ 1.05 \, \Omega $ and at $ 100^\circ \text{C} $ is $ 1.38 \, \Omega $. Determine the temperature coefficient of resistivity of this metal.

View Solution

NCERT Solutions For Class 11 Physics Chapter 1 : Physical World

NCERT Solutions for Class 11 Physics Chapter 1

Class 11 Physics Chapter 1 – Important Concepts

CBSE CLASS XII Related Questions

2.
Write two advantages of reflecting telescope over refracting telescope.

3.
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 ?

4.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

5.
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.

6.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

Similar Physics Concepts

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NCERT Solutions For Class 11 Physics Chapter 1 : Physical World

NCERT Solutions for Class 11 Physics Chapter 1

Class 11 Physics Chapter 1 – Important Concepts

CBSE CLASS XII Related Questions

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

3.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 ?

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

5.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.

6. The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
Write two advantages of reflecting telescope over refracting telescope.

3.
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 ?

4.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

5.
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.

6.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.