Question

In humans, the total optical power of the relaxed eye is approximately 60 diopters. If a person is looking at an object 10m away, what would be the distance of the image from the lens to the retina of a relaxed eye, and would this be a real or ​

Answer 1

So Accordingly to given

p=60

u=-10

so we need focal length to find the image

P=1/f in meter.

f=1/P

f=100/60 i am taking this as focal length to

calculate easy

f=1.66

lens formula

1/v=1/f+1/u (changed to get image)

1/v=60/100+1/-10

1/v=60-100/100

1/v=-40/100

1/v=-4/10

v=-2.5 cm

This is negative so image is real and inverted.