Name Of Lights:

Arnold, Corona, V-Ray, I-Ray, Key-Shot, Standard light, Photometric light.

STANDARD LIGHT:  Standard light is divided into 6 parts which are:

1.Target spot

2.Free spot 

3.Omni light

4.Skylight

5.Mr area omni

6.Mr area spot.

V-RAY LIGHT: For starting the work with v-ray first you should know to work with modelling in 3ds max. It is an extension for 3ds max but it is not a replacement for 3ds max software as V-ray is a plugin that is used for realistic render images.

What Is Light? =Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that is perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometers, between the infrared and the ultraviolet.

The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is defined as 299792458 meters per second (approximately 300000 km/s, or 186000 mi/s). It is exact because, by international agreement, a meter is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second. According to special relativity, c is the upper limit for the speed at which conventional matter, energy or any signal carrying information can travel through space. Though this speed is most commonly associated with light, it is also the speed at which all massless particles and field perturbations travel in vacuum, including electromagnetic radiation (of which light is a small range in the frequency spectrum) and gravitational waves. Such particles and waves travel at c regardless of the motion of the source or the inertial reference frame of the observer. Particles with nonzero rest mass can approach c, but can never actually reach it, regardless of the frame of reference in which their speed is measured. In the special and general theories of relativity, c interrelates space and time, and also appears in the famous equation of mass–energy equivalence, E = mc2.

Inverse Square Law:  A number of physical properties (like the force between two charges) get smaller as they get farther apart in a way that can be represented by an inverse square law. This means that the intensity of the property decreases in a particular way as the distance between interacting objects increases. Specifically, an inverse square law says that intensity equals the inverse of the square of the distance from the source. For example, the radiation exposure from a point source (with no shielding) gets smaller the farther away it is. If the source is 2x as far away, it's 1/4 as much exposure. If it's 10x farther away, the radiation exposure is 100x less.

Inverse square laws always look something like this:

X∝1/d2

X is the quantity or intensity (sound, light, electric field).

d is the distance from the center (rather than the surface).