What are the 5 characteristics of light?

Answer: Light is the source of energy that provides us with the sensation of seeing. The object has been broadly classified as luminous (emitting light) or non-luminous (non-light emitting). The luminous objects have been classified further based on the source and mode of light emission. Electric discharges include internal combustion engine spark plugs, lightning, fluorescent lamps, mercury-vapor lamps, sodium-vapor lamps, and so on.

The characteristics of light are as follows –

• Light travels in a straight line.
• An electromagnetic wave is light.
• Light can also travel through the vacuum.
• Light travels without a medium since it is a transverse wave.
• It moves through the vacuum at a speed of 3×108 m/s.
• When a light goes between different mediums, its wavelength (λ) alters.
• In the universe, light moves the fastest.
• When an opaque item blocks the light source, a shadow is cast.