2. Sample Papers
  3. 10th Class
  4. Science

10th Class Science Sample Paper Science Olympiad Model Test Paper-5

  • question_answer
    What is the focal length of lens having power + 2D?

    A) 20 cm

    B) 25 cm

    C) 40 cm

    D) 50 cm

    E) None of these

    Correct Answer: D

You need to login to perform this action.
You will be redirected in 3 sec spinner