what is principle focus
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A focus for the beam of incident day parallel to the axis is called principle focus
sonu456pragathi48:
Thank u somuch
ur most wlcm dear
where is ur dp
when I apply my dp... I get a number of follower and number of msg too... that's the reason I never apply dp
it's my new ID... and I have left the first one for the same reason too
Oh iam sorry
no.. it's okk
What r u studing
class 9
Answered by
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HII...
HERE IS YOUR ANSWER....
PRINCIPLE FOCUS:
IT IS MAINLY THE POINT CONSIDERED WHERE THE PARALLEL LINES FROM INFINITY DISTANCE MEET. AS IN CASE OF CONVEX AND CONCAVE MIRRORS AND LENS WE KNOW THAT AT FOCUS THE REAYS FROM INFINITY MEET . ACTUALLY THE PROPER DEFINATION IS THAT FOCUS IS A POINT AT WHICH THE RAYS COMING FROM INFINITY PARALLEL TO PRINCIPLE AXIS MEET.
HOPE IT HELPS YOU.....
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