Light class 7

Path of the light is (a)  

Light travels (a)   km/s in air or vacuum

Materials that allow light to pass through completely are known as (a)  

Objects that allow light to pass through partially are called (a)  

Materials that are not able to allow light to pass through, are called (a)  

Shadows will be formed in the (a)   Side half light source

The shadow will be always (a)   whatever may be colour of light rays

Pin hole camera is a simple device which helps us to understand about the (a)   of light

Pin hole camera was used to photograph movement of the sun over here long period of time this type of photography is known as (a)  

A plane mirror is a mirror with a (a)   reflective surface.