Recently, 22° circular halo was observed in the atmosphere. Which of the following statements is/are correct about the same?

  1. It is an  optical phenomenon produced by light interacting with ice crystals suspended in upper troposphere
  2. It can be observed around sun as well as around moon

Which of the above statements is/are correct?

Answer: [C] Both 1 & 2

22° circular halo was recently observed in Kolkata. It is an optical phenomenon produced by light interacting with ice crystals suspended in upper troposphere. It appears as a large ring around the Sun or Moon with a radius of about 22°. 

This question is a part of GKToday's Integrated IAS General Studies Module