Question

Harvey has an inclination towards astronomy and wants to construct telescope mirrors. Which metal should he use for reflective coatings in telescope mirror? A.
tungsten

B.

stainless steel

C.

aluminum

D.

copper

E.

iron

Answer 1

Answer:

The metal Harvey should use for reflective coatings in telescope mirror is;

C. Aluminum

Explanation:

In a telescope, the mirror of the telescope is usually made of a temperature-resistant and strong glass, while the reflective coating of the mirrors is made usually from aluminum. A protective coating often composed of silicon dioxide is placed n the top of the reflective coating

Aluminum is used in a telescope, rather than the silver, which is the most reflective material, because silver requires special conditions to be able to work, and silver tarnishes when exposed to air containing sulfur, and silver is susceptible to corrode.