Mark the correct options :

Options

A. If the far point is `1m` away from the eye, diverging lens should be used,
B. If the near point is `1 m` away from the eye, divergent lens should be used,
C. If the far point goes ahead, the power of the divergent lens should be reduced,
D. If the near point goes ahead, the power of the convergent lens should be reduced.

Answer

A, C

Explanation

A diverging lens has to be used when far point is `1 m` away. Further, if far point shifts ahead, focal length of diverging lens should be increased or its power should be reduced.