16  (a) The position of object, and the
image formed by a double convex lens,
(b) Refraction at the first spherical surface and
(c) Refraction at the second spherical surface *
Note that now the refractive index of the medium on the right side of ADC is n1
while on its left it is n2 Further DI1 is negative as the distance is measured
against the direction of incident light Rationalised 2023-24
Ray Optics and
Optical Instruments
235
From Eqs