Question

Study the figure and answer the questions
a) What type of telescope is shown in the figure?
b) Which type of mirrors does the telescope use?
c) Explain the working of the above telescope?
​

Answer 1

Answer:

a)Telescope shows the far direction from us

b)The Reflecting Telescope or Reflector uses a concave mirror as the telescope’s Primary Objective, rather than a lens or lenses. The type of reflector depends on other system mirror(s), called the Secondary Mirror.

c)The first telescopes focused light by using pieces of curved, clear glass, called lenses. So why do we use mirrors today? Because mirrors are lighter, and they are easier than lenses to make perfectly smooth.