Solutions of Physics from Indian Railway Group-D(Technical And Non-Technical Recruitment Exam

This topic discusses the definition of the unit of measurement. It lists the SI units of the fundamental quantities in Physics. We will also learn about the SI units and CGS units of force as well as energy.

This topic describes the motion and lists the difference between scalar and vector quantities. It covers the definitions of distance, displacement, speed, velocity and acceleration. It also describes the equations of motion.

This topic discusses the definitions of work and energy. We will learn the SI units of work and energy and learn about rest mass. We will also study the law of conservation of energy.

The topic highlights the characteristics of sound waves. We will learn about the speed of sound which depends upon the medium. We will study the perception, pitch and intensity of sound along with the phenomenon of echo.

In this topic, we will learn about heat and temperature. It briefs on pyrometer, specific heat capacity and the four laws of thermodynamics. It also explains three ways heat transfer can take place, that is conduction, convection and radiation.

This topic discusses the properties of light. We will learn about the phenomenon of reflection and its laws. We will learn about lens, uses of mirrors, refraction, prism, simple microscope and compound microscope.

This topic explores the inventions and discoveries in the field of science. We will learn about the years of invention and inventors. It also lists the invention of many devices and instruments.