Question

1. state three categories of non-luminous bodies 2. mention 4 properties of light what are light rays and beams 4.the property of light shows that light travels in a straight line or path is called

Answer 1

oh hello

question four and marks only five

Answer 2

Explanation:

1.Objects that do not reflect light are known as non luminous objects. Examples of non luminous objects are wood, plastics, metals etc. Properties of Luminous Objects and Non Luminous ObjectsLuminous bodies like the sun, a gas flame and an electric light filament are visible since they are light sources

2.The primary properties of visible light are intensity, propagation direction, frequency or wavelength spectrum, and polarization, while its speed in a vacuum, 299,792,458 meters per second, is one of the fundamental constants of nature. ... Like all types of EM radiation, visible light propagates as waves.

4.Rectilinear propagation describes the tendency of Electromagnetic waves (light) to travel in a straight line.

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