Physics Class 10 Notes: Light, Reflection, and Refraction, Slides of Physics

Download Physics Class 10 Notes: Light, Reflection, and Refraction and more Slides Physics in PDF only on Docsity!

Physics class 10 notes.

By Aviral sachan

Light :

Reflection

and refraction

A

About light:

• It is a form of energy that enables us to see.

•Light always travels in straight line.

•Light has the maximum speed in this world. Its value is 3×10^8 m/s ( vaccum or air) denoted by `C’.

••Straight lines movement of light called rectilinear propagation.

•Light = Photon =Particle

E. M. Wave=wave

Reflection of light:=~

Laws of reflection:

● Incident ray, reflected ray and normal all lie on the same plane. ● Angle of incidence is always equal to angle to reflection.

● Types of mirror :

Concave mirror: Convex mirror:

Types of image: There are two types of image.

● Real image. ● Virtual image.

Definition of types of image formation:

Real image,

● Real image is that which is formed when reflected rays actually meet at certain point. ● It is always inverted. ● It can be obtain on screen.

Virtual image, ● Virtual image is that which is formed when reflected rays do not meet actually but appears to meet at a certain point. ● It always erect. ● It can not be obtain on screen.

● Characteristics of image

formation by plane mirror, ● Virtual erect. ● Same size. ● Distance of object=Distance of image from mirror (U=v). ● Laterally inverted.

● Lateral

inversion,

● It is the phenomena when LHS become RHS or vice versa when an object is exposed to plane mirror.