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A point object is placed in air at a distance of 4R on the principal axis of a convex spherical surface of radius of cur…

Q1

A point object is placed in air at a distance of 4R on the principal axis of a convex spherical surface of radius of curvature R separating two mediums, air and glass. As the object is moved towards the surface, the image formed is :

a

always real

b

always virtual

c

first virtual and then real

d

first real and then virtual

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