Question

Assertion (A): Aluminium is the best material for telescopes.

Reason (R): Aluminium is lightweight, strong and rust resistant metal.

Options

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R does not explain A.

• A is true but R is false.

• A is false but R is true.

Answer 1

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.