WBCS.LIVE practice question

The power of a lens is +2.0D. The focal length of the lens and its nature are

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 50 cm, concave
  2. 50 cm, convex
  3. 100 cm, convex
  4. 100 cm, concave

Correct answer and explanation

Correct answer: 50 cm, convex