The dispersive power of the material of lens of focal length `20cm` is `0.8`. The longitudinal chromatic aberration of the lens is

A convex lens has mean focal length of 15 cm. The dispersive power of the material of prism is 0.01. What is the longitudinal chromatic aberration for the lens ?

Statement-1 : The dispersive power of a lens of focal length 10 cm is 0.08 . Longitudinal chromatic aberration of the lens would be 0.8 cm . Statement-2 : It follows from f_( r) - f_(v) = omega.f

Unit of longitudinal chromatic aberration of a thin lens is __________ .

A convex lens has mean focal length of 20 cm. The dispersive power of the material of the lens is 0.02. The longitudinal chromatic aberration for an object at infinity is

A convex lens has mean focal length of 20 cm. The dispersive power of the material of the lens is 0.02. The longitudinal chromatic aberration for an object at infinity is

A convex lens has mean focal length of 20 cm. The dispersive power of the material of the lens is 0.02. The longitudinal chromatic aberration for an object at infinity is