NCERT Solutions for Class 11 Physics, Chapter 1 - Physical World

Physics is an integral part of science. It is the study of matter and how it behaves under different conditions. In order to continue with science in class 12, or even take up engineering or any other science-related degree for graduation, this chapter will help you learn about how physics is present all around us. The Class 11 Physics Chapter 1 Pdf will further aid your study. For more information on this chapter, you may refer to NCERT Solutions for Class 11 Physics Chapter 1.

Let us take a look at the subtopics of Class 11 Physics, Chapter 1, Physical World.

1.1 What is Physics?

1.2 Scope and Excitement of Physics

1.3 Physics, Technology and Society

1.4 Fundamental Forces in Nature

1.5 Nature of Physical Laws

In Class 11 Physics, Chapter 1, you will learn:

Section 1.1 – This section will tell you about the term ‘physics’. It is derived from a Greek word that means nature. You will learn how physics has developed as a science because, since time immemorial, human beings have been curious about the various phenomena that go around on Earth. Be it volcanoes, tides, sea breeze or land breeze, humans have always been fascinated by these events. From the discovery of gravity to the invention of mobile phones and high tech devices, physics has come a long way. You will also learn about the principle of reductionism, which is one of the most essential approaches in physics.

Section 1.2 – In this section, you will learn about the scope of physics, its classifications as  Microscopic and Macroscopic. You will learn that Macroscopic is mainly related to the research that is done in the laboratory; it also includes phenomena that happen on an astrological and terrestrial scale. On the other hand, microscopic physics is the division of physics that deals with atoms, molecules and nuclear phenomena.

Section 1.3 – In this section, you will learn the inter-relation between Physics, society and technology. You will also learn the various principles that have come up over time, based on the dynamically changing needs of society. For example, the discipline of thermodynamics arose from the need to understand and improve the working of heat engines. Industrial Revolution in the eighteenth century is one of the primary reasons behind the invention of the steam engine. Similarly, a lot of events that happen in our society influence what science comes up with. Another great example of physics developing the technology around us is the discovery of silicon chips. It was the backbone of the computer revolution that took place in the 20th century.

Section 1.4 – In this section, you will get to know that in physics, force is any form of interaction that creates a change in the motion, size or shape of an object. There are a lot of different types of forces. For example, the force exerted by a liquid is known as the buoyant force. The force that the Earth exerts on objects and pulls them closer is known as the gravitational force.

Some of the most common forces are:

• Gravitational Force

• Electromagnetic Force

• Weak Nuclear force

• Strong Nuclear force

Section 1.5 – This section will explain the several conservation laws that apply in nature; some of them being conservation of linear momentum, parity, angular momentum, energy, etc. In various symmetries of nature, these laws are applicable.

Here at UrbanPro, you will be provided with a Class 11 Physics Chapter 1 Pdf that will help you prepare for your upcoming examination. The information is also available as a PDF and you just need to click on the NCERT Solutions for Class 11 Physics Chapter 1 Pdf Download, and you are all set.