Question

In case of a converging lens for an object at infinity which is true a. Object distance = image distance b. Object distance = Focal length c. Image distance = focal length d. Image distance = Radius of curvature

Answer 1

common difference of an arithmetic progression is 3 and find a20 - a15 ... If the sum of first n terms of AP is 6n-n^2 find its 25th term ... Asked by Md Ayub 9th February 2018 8 :15 PM.