Both the lenses used in a telescope are

convex

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concave

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bipolar

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None

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Solution

The correct option is A convex
Refracting telescopes use lenses to focus the light and reflecting telescopes use mirrors. Refracting telescopes work by using two lenses to focus the light and make it look like the object is closer to you. Both lenses are in a shape that's called convex.

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Name the lens/lenses which is/are being used in a refracting telescope?

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