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# HC Verma The Special Theory of Relativity Solutions (Chapter 47)

HC Verma Solutions for Class 12 Physics Part-2 Chapter 47 – Some Natural Phenomena illustrates the special theory of relativity. The principle of relativity and kinematical consequences are discussed in the chapter. Other main topics of the chapter include dynamics at large velocity, energy and momentum, the ultimate speed, and the twin paradox.

All the topics of this HC Verma The Special Theory of Relativity Solutions are explained well with the help of examples and activities. Following the HC Verma Class, 12 Physics Solutions provided by Instasolv will not only help you to understand the topics easily but also helps in learning Physics in a broad spectrum.

In this chapter of HC Verma Concepts of Physics Part 2 Solutions, there are around 4 exercises with a total of 46 questions. You can get 100% accurate and precise solutions for Chapter 47 – The Special Theory of Relativity explained by expert Physics teachers at Instasolv. It is unique as it serves its purpose in the simplest as well as the best way. Also, you can access these solutions for free.

## Important Topics for HC Verma Concepts of Physics Part-2 Solutions Chapter 47: The Special Theory of Relativity

The Principle of Relativity

The principle of relativity is the necessity that the equations defining the laws of physics have a similar form in all acceptable frames of reference. For example, in the framework of distinct relativity, the Maxwell equations have a similar form in all inertial frames of reference.

Energy and Momentum

The energy and momentum formulas are used to realize the case of elements like the photon that have zero mass. Therefore elements with zero mass always travel with velocity ‘c’. The energy and momentum formulas denote p/E = v/c2, and therefore p = E/c for zero-mass elements.

The twin paradox is an assumed experiment in special relativity including the same twins, one of whom makes a passage into space in a high-speed rocket and comes back home to calculate that the twin who continued on Earth has aged more.

Kinematics

Kinematics is a branch of physics and a portion of classical mechanics related to the geometrically possible motion of a body or system of bodies without thought of the forces included. For example, moving trains or moving water in a river.

Frequency

Frequency is the number of happenings of a reciting event per unit of time. It is also mentioned as temporal frequency, which underlines the difference to spatial frequency and angular frequency. Frequency is calculated in units of hertz (Hz) which is equivalent to one incidence of a repeating event per second.

Speed

Speed refers to the distance travelled per unit of time. It is how fast the body is moving. It is the scalar quantity that indicates the magnitude of the velocity vector. Speed does not have a direction. Higher will be the speed, faster will be the moving object.

Velocity

Velocity is described as a vector measurement of the rate and direction of motion. It is the speed at which a body moves in one direction.

### Exercise-wise Discussion for HC Verma Concepts of Physics Part-2 Solutions Chapter 47: The Special Theory of Relativity

Exercise 1 – Short Answer Type Questions

This exercise set of HC Verma Solutions for ‘The Special Theory of Relativity’ has around 5 questions which are short answer type questions related to the frictional change of mass, the energy stored, and rise in the mass of elements.

Exercise 2 – Multiple Choice Questions I

Exercise 2 consists of 7 questions that are multiple-choice questions. These questions are based on the principle of relativity and kinematical consequences.

Exercise 3 – Multiple Choice Questions II

This exercise set also contains a total of 6 multiple-choice questions based on the topics like dynamics at large velocity, energy and momentum, the ultimate speed, and the twin paradox.

Exercise 4 – Long Answer Type Questions

This exercise of HC Verma Solutions for Class 12 Physics ‘The Special Theory of Relativity’ consists of a total of 28 questions which are long answer type questions. Practising these questions will help you clear your concepts.

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