A person cannot see the objects clearly placed at a distance more than 40 cm

A person cannot see the objects clearly placed at a distance more than 40 cm. He is advised to use a lens of power

Options

(a) -2.5 D
(b) 2.5 D
(c) -6.25 D
(d) 1.5 D

Correct Answer:

-2.5 D

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. In a vessel, the gas is at a pressure P. If the mass of all the molecules
  2. A road of width 20 m forms an arc of radius 15 m,its outer edge is 2m higher than
  3. In a given process on an ideal gas, dW=0 and dQ<0. Then for the gas
  4. A wave travelling in the +ve x-direction having displacement along y-direction as 1m
  5. Maximum velocity of the photoelectrons emitted by a metal surface is 1.2×10⁶ ms⁻¹.