Q12 (i) (a) Draw the ray diagram of a compound microscope t when the final image lies at the least distance of distinct vision, D.
(b) Write an expression for magnifying power of an astronomical telescope when final image lies at infinity. (No derivation required)
OR
(ii) For refraction at convex spherical surface of denser medium η2 surrounded by a rarer medium of refractive index η1, derive a formula connecting object distance u, image distance v, and radius of curvature R for the object in rarer medium and a real image formed inside the denser medium.
,
,
,
,
,