what means 1st focus of lens and 2 focus of lens
Answers
Answered by
1
it means that there are two focus on a lens'ray diagram and they lie in opposite direction of optical center
Answered by
1
For a lens, or a spherical or parabolic mirror, it is a point onto which collimated light parallel to the axis is focused. Since light can pass through a lens in either direction, a lens has two focal points – one on each side.
Attachments:
Similar questions