Heya ! Mate tell me.What is Focal length ??????

1.	Heya ! Mate tell me.What is Focal length ??????
Answer» ANSWER : Firstly To know the CONCEPT of Focal length u should know about Pole and focus of mirror . Principal Focus : Focus is a point on principal axis on which the ray of light coming parallel to principal axis intersect After refection. It is DENOTED by F Pole : Pole is the centre of the mirror . Now come to your question What is focal length ?? Here is Answer : DISTANCE between pole to principal focus is known as Focal length (f). Focal length is half of Radius of curvature. Focal length = Radius /2 Thanks !!!

Answer»

ANSWER :

Firstly To know the CONCEPT of Focal length u should know about Pole and focus of mirror .

Principal Focus :

Focus is a point on principal axis on which the ray of light coming parallel to principal axis intersect After refection.

It is DENOTED by F

Pole :

Pole is the centre of the mirror .

Now come to your question

What is focal length ??

Here is Answer :

DISTANCE between pole to principal focus is known as Focal length (f).

Focal length is half of Radius of curvature.

Focal length = Radius /2

Thanks !!!

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