The focal lengths of a converging lens measured for violet, green and red colours of `fv'f_(G)'f_(R)` respectively. We will find

The focal length of a converging lens is measured for violet, green and red colours. If is f_(v) , f_(G) and f_(R) respectively. We will get

The focal length of a coverging lens is measured for violet,green and red colours.It is f_v,f_g and f_r respectively.We will get

The focal length of a converging lens are f_v and f_r for violet and red light respectively.

The focal length ofa converging lens are f_v and f_r for violet and red light respectively.

The focal length of a converting lens are f_(v) and f_(r) for violet and red lights, respectively. Which of the following is correct?

The focal length of a converting lens are f_(v) and f_(r) for violet and red lights, respectively. Which of the following is correct?

The focal lengths of a convex lens for blue and red colors of light are f_(B) and f_(R ) respectively, and those of a concave lens are f'_(B) and f'_(R ) then