Soil profile

Formation of image by concave mirror

S.no.        Object distance               Concave mirror
 1.               beyond-c                Real, inverted,diminished
                                                  formed between F and C
 2.                At-c                       Real,inverted,equal in size                                                                   formed at C       
 3.            Between C and F      Real,inverted,enlarged and
                                                  formed beyond C
 4.               At-F                        Real,inverted,enlarged and
                                                   at infinity
 5.            Between F and P        virtual,erect,enlarged and
                                                    formed behind the mirror

Law of reflection

First law

The incident ray,the normal at the point of incident and the reflected ray,all lie in the same plane.

Second law

The angle of  incident and the angle of reflected are equal to each other.

Image formation in the plane mirror

Answer the question

                                                                 
Q-1.Give two example of a chemical change where a new substance is formed?

Q-2.What happen when calcium hydroxide reacts with hydrochloric acid.

Q-3.Why is a new quilt warmer than an old one?

Q-4.What is the S.I unit of speed?

Q-5.Why do athletes often get muscle cramps?

USE OF MIRROR

Use of convex mirror

1.Rear view mirror in car

2.In telescope

Use of concave mirror

1.Head mirror (EMT surgeon)

2.Reflector of torch

3.Ophthalmoscope (eye surgeon)

Use of plane mirror

1.Periscope

2.Kaleidoscope

 

ANMOL'S ADVENTURE

WITH  THE DEEPEST RESPECT TO ALL MY TEACHERS, I DEDICATE THIS  BLOG  TO MY TEACHERS WHO CHIDED ME FOR MY IGNORANCE AND PRODDED ME FOR EXCELLENCE


When you are inspired by some great purpose, some
extraordinary project, all of your thoughts break their
bonds: your mind transcends limitations, your
consciousness expands in every direction and you find
yourself in a new, great and wonderful world. Dormant
forces, faculties and talents become alive and you discover
yourself to be a greater person than you ever dreamed
yourself to be.

(Patanjali)

I welcome one and all for contribution in this blog

ANMOL KUMAR SINHA