Assertion (A): Aluminium is the best material for telescopes. Reason (R): Aluminium is lightweight, strong and rust resistant metal.

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KollegeApply · Accepted Answer

Both A and R are true and R is the correct explanation of A. Explanation: Aluminium is indeed the best material for telescopes because it is lightweight, strong, and rust resistant. These properties make it ideal for precision instruments like telescopes where durability and weight matter.

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