A concave spherical surface with radius r separates a medium with index of refraction 2 from air.As an object in air is moved toward the surface from far away along the central axis, its image:
A)changes from virtual to real when it is a distance r/2 from the surface
B)changes from virtual to real when it is a distance 2r from the surface
C)changes from real to virtual when it is a distance r/2 from the surface
D)changes from real to virtual when it is a distance 2r from the surface
E)remains virtual

Question

Quizplus · Accepted Answer

The Answer of A concave spherical surface with radius r separates a medium with index of refraction 2 from air.As an object in air is moved toward the surface from far away along the central axis, its image:
A)changes from virtual to real when it is a distance r/2 from the surface
B)changes from virtual to real when it is a distance 2r from the surface
C)changes from real to virtual when it is a distance r/2 from the surface
D)changes from real to virtual when it is a distance 2r from the surface
E)remains virtual

A Concave Spherical Surface with Radius R Separates a Medium