Question

define the following
a)reflection of light
b)refraction of light
c) dispersion of light
d)spectrum
​

Answer 1

$\Large\bf\red{\underline{\overline{\mid{\orange{ReFlEcTiOn \: Of \: LiGhT :-}}\mid}}}$

• Light rays travel in a straight line. A ray is a very narrow beam of light.
• An object can only be seen when light rays from the object enter our eyes. These light rays can come directly from the object or as a result of the object reflecting light rays from a light source.

$\Large\bf\pink{\underline{\overline{\mid{\purple{ReFrAcTiOn \: Of \: LiGhT :-}}\mid}}}$

• Refraction in simple terms is the bending of light when it passes from one transparent substance to another. It also happens with water, sound and other waves.

• Due to this bending, which causes refraction of light, we are able to have magnifying glasses, prisms, lenses and rainbows. Our eyes would not be able to focus, without refraction of light.

$\Large\bf\green{\underline{\overline{\mid{\blue{DiSpErSiOn \: Of \: LiGhT :-}}\mid}}}$

• The dispersion of light is the phenomenon of splitting of a beam of white light into its seven constituent colours when passed through a transparent medium.
• It was discovered by Isaac Newton in 1666. Newton discovered that light is made up of seven different colours. He passed a beam of sunlight through a glass prism.

$\Large\bf\green{\underline{\overline{\mid{\orange{SpEcTrUm :-}}\mid}}}$

• A continuum of color formed when a beam of white light is dispersed (as by passage through a prism) so that its component wavelengths are arranged in order

______________________________________

╿╼╾╼╾╼╾╼╾╼╾╼╾╼╾╿

╿ʙʀᴀɪɴʟɪᴇꜱᴛ ᴩʟᴇᴀꜱᴇ♡ ⠀╿

╿╼╾╼╾╼╾╼╾╼╾╼╾╼╾╿

Answer 2

a) Reflection of light :-

It is a phenomenon of bouncing back of light in the same medium on striking the surface of any object.

☆In reflection the path of light rays changes without any change in the medium.

b)Refraction of light:-

when light travels indirectly from one medium to another , the direction of propagation of light in second medium changes. This phenomenon is known as refraction of light.

c)Dispersion of light:-

The splitting of light into seven colors or its component colours ( violet, indigo, blue,green,yellow, orange,and red) is called Dispersion of light.

d) Spectrum:-

The band of the coloured components of a light beam is called its spectrum.

Hope it helps you:)