What is an angle of incidence (∠i)?
The angle between the normal and incident ray is called the angle of incidence (∠i).
What is normal in refration and reflection of light ?
Draw a line making an angle of 90º to the line representing the mirror at the point where the incident ray strikes the mirror. This line is knownas the normal to the reflecting surface at that point
What is reflected ray ?
The ray that comes back from the surface after reflection is known as the reflected ray
What is an incident ray ?
After striking the mirror, the ray of light is reflected in another direction.The light ray, which strikes any surface, is called the incident ray.
Laws of Reflection
Laws of reflection (i) The incident ray, the reflected ray and the normal ray at the point of incidence, lie in the same plane. (ii) The angle of incidence is equal to the angle of reflection.
What is light ?
Light is an electromagnetic wave , It provides sensation of sight . Light travels in a rectilinear motion .
What is tsunami ?
Tsunami is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean, river or a large lake.
What is static charges ?
The electrical charges produced by rubbing are called static charges.
What is causes of lightning?
The process of electric discharge between clouds and the earth or between different clouds causes lightning.
What is earthing ?
The process of transfer of charge from a charged object to the earth is called earthing.