universe & solar system section 12 MCQ Questions & Answers Detailed Explanation
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The following question based on Universe, solar system and Astronomy topic of indian geography mcq
(a) The radiation emitted by the sun exerts a radial pressure on the comet throwing its tail away from the Sun.
(b) The tail of the comet always exists in the same orientation.
(c) the comet rotates, the lighter mass of the comet is attracted by some star situated in the direction of its tail.
(d) the comet rotates around the sun, the lighter mass of the comet is pushed away due to the centrifugal force alone.
The correct answers to the above question in:
Answer: (d)
Because of the comet rotation around the sun, the lighter mass of the comet is pushed away due to the centrifugal force alone. When a comet comes close enough to the sun, the ice begins to melt at such a great pace that sublimation occurs.
The sublimation of the ice that carries away dirt and rock causes the appearance of a large white fireball with a long tail. The layer that envelopes the comet is called the coma. A tail of dust particles, hydrogen, or ions extends more than a million miles away from the comet.
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Read more universe solar system astronomy Based Indian Geography Questions and Answers
Question : 1
Hydrogen, Helium and Methane are the main gases present on
a) Uranus, Neptune and Venus
b) Mars and Venus
c) Jupiter, Saturn and Mars
d) Uranus, Neptune and Mars
Answer »Answer: (c)
Question : 2
One Astronomical Unit is the average distance between
a) Jupiter and the Sun
b) Pluto and the Sun
c) Earth and the Moon
d) Earth and the Sun
Answer »Answer: (d)
Question : 3
The distance of Moon from the Earth is
a) 350 thousand kms.
b) 446 thousand kms.
c) 300 thousand kms.
d) 364 thousand kms.
Answer »Answer: (d)
The distance of moon from the Earth is 364 thousands kms. The Moon is the only natural satellite of the Earth and the fifth largest moon in the Solar System.
It is the largest natural satellite of a planet in the Solar System relative to the size of its primary, having 27% the diameter and 60% the density of Earth, resulting in 1? 81 its mass.
Question : 4
Which one of the following planets is the brightest?
a) Venus
b) Jupiter
c) Mercury
d) Mars
Answer »Answer: (a)
Question : 5
‘Super Nova’ is
a) A comet
b) A dyning star
c) A black hole
d) An asteroid
Answer »Answer: (b)
Question : 6
The possibility of desert on Earth is more
a) Nearby 50º latitude
b) Nearby 70º latitude
c) Nearby 23º latitude
d) Nearby 0º latitude
Answer »Answer: (c)
GET Universe, solar system and Astronomy PRACTICE TEST EXERCISES
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universe & solar system section 12
universe & solar system section 13
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