Question

Give reasons for the following -

Aluminium is used for making concave mirrors for astronomical telescopes.

Answer 1

• Aluminum is silvery-white colored metal.
• It is a malleable, ductile, light-weighted, and strong material.
• It is also corrosion-resistant and a good conductor of heat and electricity.
• The reflective coating for telescope mirrors is often made of aluminum, and the protective coating that sits on top of the reflective coating is typically made of silicon dioxide.