What does a refracting telescope use to collect and focus light?
AA mirror
BA prism
CA lens
DA screen
Answer & Solution
Correct answer: C. A lens
1. Optical telescopes gather visible light from distant objects.
2. A refracting telescope does this with a large converging lens.
3. The lens bends the light inwards to a focus, where a second lens magnifies it.
4. A telescope built around a curved mirror is a reflecting telescope instead.
_Source: Siyavula Natural Sciences Grade 8 (CC BY 4.0), 1. Refracting telescopes_
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