Why do we feel hot because of sunlight? sunlight , light generally , is an electromagnetic wave which turns into heat when it contacts a matter (solid,liquid,etc..) is that right ?
 A: Light like sunlight is an electromagnetic wave with components with different frequencies. These components follow a particular distribution of intensities. One portion of the energy of this light resides in what is called infrared radiation and most materials absorb in that range (link provides some more extra information regarding this radiation and heat). This absorption predominantly causes the heating of matter that you mention.
A: The light you see that comes from the sun is all radiation on the visible light spectrum, there is also a whole lot of light that comes from the sun that isn't visible to the human eye. Most of this radiation is absorbed by your skin and the radiation excited the electrons in your skin, giving them more energy, which feels warm. Some light like ultraviolet radiation which is a higher frequency than your eyes can pick up are actually so intense that they can give you a sunburn.
If you are standing too close to a nuclear detonation, you skin rapidly absorbs an extremely large amount of gamma radiation, which penetrates easily through the skin and basically excites your entire body's electrons so much, so fast, that you completely vaporize almost instantly.
Radiation is fun!
