Drawbacks of Refracting Telescope

Q. What are the two types of reflecting telescopes? Draw their labelled diagrams.

Q. Optical telescopes face issues due to chromatic aberration.

1. True
2. False

Q. What are the difficulties in using large and ground based optical telescopes?

1. Chromatic aberration
2. Large lenses are very heavy and tend to get distorted
3. Cannot be used during the day time
4. Very noisy