question_answer 56)

  A convex lens of focal length 20 cm can produce a magnified virtual as well as real image. Is this a correct statement? If yes, where shall the object be placed in each case for obtaining these images?

Answer:

                  Yes, the statement is correct. The convex lens of focal length 20 cm can produce a magnified, virtual as well as real image. The object should be placed (i) Between focus F1 and optical centre O (i.e., a distance less than 20 cm from the lens) for magnified, virtual and erect image. (ii) Between (c and 2F, (;.e., at a distance between 20 cm to 40 cm) for real, inverted and enlarged image.