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

10th Class Science Sample Paper Science Olympiad Model Test Paper-4

  • question_answer
    A concave lens has a focal length of 20 cm. At what distance should the object from the lens be placed so that it forms an image at 15 cm from the lens?

    A) 20 cm

    B) 30 cm

    C) 40 cm

    D) 60 cm

    E) None of these

    Correct Answer: D

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