Science, asked by raj841, 1 year ago

you are providing with two convex lens of same aperture and different thickness which one of them will be of shorter focal length


sizaB: the lens which is more thick.

Answers

Answered by deepa772004
3

We can answer this question by using lens maker’s formula.

For clarity, we shall consider same value , R for radius of curvature for both surfaces of a lens.

For less thick lens we take R=R1

For more thick lens R=R2.

It is clear that R2<R1.

Now,

(1/f1)=(n-1)[(1/R1)-(-1/R1)=(n-1)(2/R1) or

f1=R1/[2(n-1)]……………………(1) (less thick lens).

f2=R2/[2(n-1)]…………………..(2). (more thick lens.)

Since R1>R2, we have,f1>f2.

Hence, more thick lens is of shorter focal length.

Answered by rajk7489416gmailcom
2
the convex lens having more thickness will have shorter focal length.
Similar questions