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

10th Class Science Sample Paper Science Olympiad Model Test Paper-8

  • question_answer
    An object is placed at the distance of 30 cm from a convex lens. A real image is formed 20 cm away from the lens. Find the focal length of the lens.

    A) 6 cm    

    B) 12 cm

    C) 18 cm

    D) 24 cm

    E) None of these    

    Correct Answer: B

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