Question

please explain the convex lens and concave lens

Answer 1

Hii There!!!

$\large{\blue{\bold{Convex}}}$ $\large{\red{\bold{Lens}}}$

◆Convex lens is a lens which has both the surfaces curving invards.

◆It is thinner at the middle and thicker at the edges.

◆Its focal length is 'Negative'.

◆ It always produces a 'Virtual Image'.

◆It diverges the incident light coming towards it.

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$\large{\red{\bold{Concave}}}$ $\large{\blue{\bold{Lens}}}$

◆Concave lens is a lens which has both the surfaces curving outwards.

◆It is thinner at the edges and thicker at the middle.

◆Its focal length is 'positive'.

◆It always forms 'Real Image' but when lens is placed between focus and optical centre it forms 'Virtual Image'.

◆It converges the incident light passing through it.

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Hope it helps :)