2. Name the lens that has the greater curve in (a) a refracting telescope (b) a compound microscope

**(a) Refracting Telescope:** The **objective lens** has the greater curve (smaller radius of curvature). The objective lens needs to gather as much light as possible from distant objects, and a larger curve helps achieve this.<br /><br />**(b) Compound Microscope:** The **objective lens** also has the greater curve (smaller radius of curvature) in a compound microscope. Similar to the telescope, the objective lens needs to gather light from a small, close object and create a magnified real image. A greater curve contributes to a higher magnification power.<br />