by Rajan Gupta | Aug 8, 2020 | Articles
Light is a form of energy. Light helps us to see object .But it is not visible to us. We can define light as the form of energy which causes in us the sensation of sight. Light always travels from one point to another in straight lines. The light rays travel from one...
by Rajan Gupta | Aug 8, 2020 | Articles
An electromagnet is a temporary magnet in which a long insulated copper wire is wrapped on a soft iron core in the form of a helix. Thus, an electromagnet is a solenoid having a core of soft iron core at its centre. When electric current in passed through it, it...
by Rajan Gupta | Aug 8, 2020 | Articles
Primary Colours The primary colours of light are red, green, and blue. These colours are also called basic colours of light. the reason for considering red, green and blue as primary colours is that all the other colours are made by mixing primary colours in suitable...
by Rajan Gupta | Aug 8, 2020 | Articles
Magnetic filed may be defined as the space around a magnet in which the affect of magnet can be experienced. The magnetic field of a magnet is represented by equidistant parallel lines called magnetic lines of force. The magnetic line of force may be defined as the...
by Rajan Gupta | Aug 8, 2020 | Articles
Composition of Air:- We need air to breath in oxygen gas in our body so that our body may keep on doing its various metabolic activities normally. Thus air is the basic requirement for life on earth. Without air almost all living animals will perish from earth. Air is...
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