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1) Aurora Australis occur in the
a) S hemisphere
b) N hemisphere
c) Equator
Explanation: Aurora Australis, also known as the Southern Lights, occur in the Southern Hemisphere.
2) Aurora Australis called .... Lights
a) Northern
b) Southern
c) Temperate
Explanation: Aurora Australis is called the Southern Lights.
3) Aurora Borealis occur in the
a) S hemisphere
b) N hemisphere
c) Equator
Explanation: Aurora Borealis, also known as the Northern Lights, occur in the Northern Hemisphere.
4) Aurora Borealis are called .... Lights
a) Northern
b) Southern
c) Temperate
Explanation: Aurora Borealis is called the Northern Lights.
5) Corona occur in ... clouds
c) CS
a) AS
b) NS
Explanation: Corona occurs in AS clouds.
6) Bishop's ring is due to the diffraction of light by fine particles of
a) water
b) dust
c) ice
Explanation: Bishop's ring is caused by the diffraction of light by fine Dust.
7) The radius of the Bishop's ring is about
a) 32°
b) 22°
c) 42°
Explanation: The radius of the Bishop's ring is about 22°.
8) Superior Mirage occurs in marked
a) Lapse
b) Isothermal
c) Inversion
Explanation: Superior Mirage occurs under inversion conditions.
9) Inferior Mirage occurs when there is
a) Lapse
b) Isothermal
c) Inversion
Explanation: Inferior Mirage occurs under lapse conditions.
10) Corona are formed due to the ... of light
a) Refraction
b) Diffraction
c) Scattering
Explanation: Corona are formed due to the diffraction of light.
11) Corona are formed due to light, passing through
a) Mist only
b) Fog only
c) small water or ice particles only
d) Any one of all these
Explanation: Corona are formed any of these.
12) Halo is produced by
a) Refraction
b) Diffraction
c) Scattering
Explanation: Halo is produced by the refraction of light.
13) Halo is produced when light passes through
a) water particles
b) ice crystals
c) both
Explanation: Halo is produced when light passes through water droplets.
14) Halo occur in the cloud
a) AS
b) NS
c) CS
Explanation: Halo occur in Cirrostratus (CS) clouds.
15) Halo is luminous ring of ... radius
a) 32°
b) 22°
c) 42°
Explanation: Halo is a luminous ring with a radius of approximately 22°.
16) Halo round the sun shows a pure clear ... on the outside
a) Red
b) Yellow
c) Violet
Explanation: Halo around the sun shows a pure clear red color on the outside.
17) Halo signifies predominance in the cloud of
a) Supercooled water drops
b) Ice crystals
c) Both
Explanation: Halo signifies the predominance of ice crystals in the cloud.
18) The cloud which cause Halo has ... chances of ice accretion
a) negligible
b) maximum
c) medium
Explanation: The clouds that cause halos have a no chance of ice accretion.
19) Sometimes a halo with a radius of ... is observed, called Large Halo
a) 32°
b) 42°
c) 22°
Explanation: A large halo with a radius of 42° is sometimes observed.
20) Halo occurs from .... cloud
a) Low
b) Medium
c) High
Explanation: Halo occurs from high-altitude clouds.

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