Consider the following statements about a microscope and a telescope : 1. Both the eyepiece and the objective of a microscope are convex lenses. 2. The focal length of the objective of a telescope is larger than the focal length of its eyepiece 3. The magnification of a telescope increases with the increase in focal length of its objective. Which of the statements given above are correct?1 and 3 only1 and 42, 3 and 41, 2 and 3