Radius of curvature of a convex curved surface is 50 cm. If refractive index of medium is 1.5, then find 1st and 2nd focal length.

Radius of curvature of a convex curved surface is 50 cm. If refractive

1.	Radius of curvature of a convex curved surface is 50 cm. If refractive index of medium is 1.5, then find 1st and 2nd focal length.
Answer» -100 CM, 150 cm -150 cm, 100 cm 100 cm, -150 cm 150 cm, -100 cm Solution :`f_1=-(R)/(n-1)=-(50)/(1.5-1)=-100` cm `f_2=-(NR)/(n-1)` `=((1.5)(50))/(1.5-1)=150` cm

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Radius of curvature of a convex curved surface is 50 cm. If refractive index of medium is 1.5, then find 1st and 2nd focal length.

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