Question Bank

1. Aurora Borealis are called ______ Lights

2. Bishop's ring is due to the diffraction of light by fine particles of

3. Aurora Australis occur in the

4. Inferior Mirage occurs when there is

5. The radius of the Bishop's ring is about

6. Halo occurs from ____ cloud

7. Aurora Australis called _____ Lights

8. Halo round the sun shows a pure clear _____ on the outside

9. Corona are formed due to the ______ of light

10. Halo signifies predominance in the cloud of

11. Halo occur in the cloud

12. Sometimes a halo with a radius of ______ is observed, called Large Halo

13. Corona are formed due to light, passing through

14. Halo is produced when light passes through

15. Halo is produced by

16. Superior Mirage occurs marked

17. Aurora Borealis occur in the

18. Corona occur in ______ clouds

19. Halo is luminous ring of ______ radius

20. The cloud which cause Halo has ______ chances of ice accretion