" The scattering of blue component of the white sunlight by air molecules present in the atmosphere causes the blue color of the sky". This can be explained as follows. The sunlight is made up of seven coloured lights mixed together. When sunlight passed  through the atmospher…

Scattering of light means to throw light in various random directions. Light is scattered when it falls on various types of suspended particles in its path. Depending on the size of particles, she the scattering can be of white sunlight as such or of the coloured lights which make up th…

We know that when light goes from one medium to another medium having different optical densities,then refraction of light rays (or bending of light rays) takes place. Now, in the atmosphere, we have air everywhere. But all the air in the atmosphere is not at the same temperature 🌡️. S…

The main constituent of petroleum gas is butane that it also contains smaller amounts of propane and erhane. Thus, we can say that petroleum gas ⛽ is a mixture of three hydrocarbons: butane, propane and ethane. Butane, propane and ethane, all burn readily producing a lot of heat. This m…

When an electric current is passed through a high resistance wire, like nichrome wire, the resistance wire becames very hot and produces heat. This is called the heating effect of current. The heating effect of current is obtained by the transformation of electrical energy into heat ene…