Question

summary of chapter light class 10th

Answer 1

light travel in straight line.mirror and lenses are form on the abject.images can be real, virtual depending on the position of the object.the reflecting surface of all types obey the law of reflection.the refracting object obey the law of refraction.mirror formula,1/v+1/u=1/f,it gives us the relationship of object, image distance, Focal length in sperical lens.in case of rectangular glass slab the refraction take place at both air glass interface and glass air interface.the emergent ray is parallel to the incedient ray

Answer 2

Explanation:

...LIGHT...

SUMMARY ✨

• The bouncing back of light when it falls on a smooth polished surface is known as reflection of light.

• Regular reflection takes place when light is incedent on smooth, polished and regular surfaces.

• Diffused/irregular reflection takes place when light is incedent on rough surface.

• Beautiful patterns are formed in a kaleidoscope because of multiple reflections.

• Sunlight know as white light consists seven colours.

• splitting of light into its constituent colours is known as dispersion.

• Important parts of the eye are cornea, iris, pupil, lense retina, nerve endings and optic nerve.

• Muscles attached to the eye lens can change its thickness to enable to see nearly and distant objects. This feature of eye is called accommodation.

• Visually challenged persons can read and write using Braille system.

THX DEAR✨