Answer:
= -1.984 Diopters
Explanation:
The lens should form an upright, virtual image at the far point.
Therefore;
The image distance, V will be -50.4 cm, since the image is virtual.
For objects at very far distant the object distance,u, will be ∞ ; This means that focal length, f, will be equivalent to image distance, v, that is -50.4 cm
Therefore; f = -50.4/100 = -0.504 m
But, since Power of a lens, P, is given by the reciprocal of focal length in meters, (1/f)
Then, power will be given by;
Power = 1/f
= 1/-0.504 m
=- 1.984
Power is measured in Diopters
Hence = -1.984 Diopters
