Question

A person with my pic I cannot see the object beyond 1.8 metre directly what should be the type of the correct lens used what should be its power give answer in short​

Answer 1

Answer:

Step-by-step explanation:

to see a distant object we must be use

concave lens of -1.8m

i.e f = -(distance of far point )

we know the formula

the power of lens = 1/f

=> 1/(-1.2)

=> -0.83D

p = -0.83D

for correct this defect of vision,

he must use a concave lens. 

I HOPE ITS HELP YOU DEAR,

THANKS

Answer 2

Hii

you are welcome in my and

The person suffer from myopia because they can see object more

then 1.8m directly.

correction

use concave mirror

the far point of myopia = 120cm = 1.2m

correction = 1.8 - 1.2 = 0.6

power = -1/f = 10/6= 5/3D

Hope it may helps you

_/\_☹️

___________________

_____________

________