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What type of telescope uses a large convex lens to produce an image?

  1. Reflecting telescope

  2. Refracting telescope

  3. Radio telescope

  4. X-ray telescope

The correct answer is: Refracting telescope

A refracting telescope is designed specifically to use a large convex lens, also known as an objective lens, to gather and focus light from distant objects. When light passes through this convex lens, it bends and converges to form an image. This type of telescope leverages the principles of refraction, which is the bending of light as it passes through different mediums, to produce a clear and magnified image of celestial bodies. In the context of telescopes, reflecting telescopes utilize mirrors instead of lenses, radio telescopes detect radio waves using large antennae, and X-ray telescopes focus high-energy X-rays. Therefore, the distinguishing feature of a refracting telescope is its reliance on a large convex lens to create an image, distinguishing it from the other types listed.