Question

Find the focal length of a convex lens if its radii of curnatures are 10 and 15 cm

Answer 1

we know the relation between the focus and radius of curvature of lens

R=2f

r1 is10 and r2 is 15

10/2=f1

f1=5cm

and

f2=7.5cm

Answer 2

Answer:

Step-by-step explanation:

Fot both radii cutvature we use R=2F FORMULA .WHERE R IS RADII AND F IS FOCAL LENTH .

GIVEN 10 CM AND 15 CM RADIUS OF CURVATURE.

R=2F

10=2F

F=5CM

AND OTHER

15=2F

F=7.5CM

HERE WE GO✌