Question

A person cannot see objects clearly beyond 2.0 m. The power of lens required to correct his vision will be

• A.
  • 2.0 D
• B. – 1.0 D
• C.
  • 1.0 D
• D. – 0.5 D

Answer 1

Answer: (D)

– 0.5 D

Answer 2

$P = \frac { 1 } { f } = \frac { 1 } { - ( \text { defected far point } ) } = - \frac { 1 } { 2 }$