Question

an old ages person can read the newspaper by keeping it at 80cm in front of this eyr what is the nature and power of the lens required to correct the problem?
$formula \: given$
​

Answer 1

Answer:

yes right formula

Step-by-step explanation:

Because old man can see 80cm read news paper so right very good

Answer 2

Answer:

the person is suffering from myopia.Hence the correction lens would be concave lens

Step-by-step explanation:

The power of lens is:

P=1/f

1/f= 1/-80 - (-1/-25)

= 1/-80 - 1/25

= 25-(-80)÷(-2000)

= 25+80/-2000

=105÷(-2000)

= -0.525

therefore power of lens is -0.525