universe & solar system section 3 MCQ Questions & Answers Detailed Explanation
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The following question based on Universe, solar system and Astronomy topic of indian geography mcq
Artificial satellites are always launched from the Earth in the Eastward direction.
Reason (R):
The Earth rotates from West to East and so the satellite attains the escape velocity.
Code
(a) (A) is true, but (R) is false
(b) (A) is false, but (R) is true
(c) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
(d) Both (A) and (R) are true and (R) is the correct explanation of (A)
The correct answers to the above question in:
Answer: (b)
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Read more universe solar system astronomy Based Indian Geography Questions and Answers
Question : 1
Which one of the following conditions is most relevant for the presence of life on mars?
a) Occurrence of ice cap and frozen water
b) Occurrence of ozone
c) Thermal conditions
d) Atmospheric composition
Answer »Answer: (a)
Presence of ice cap and frozen water on Mars is one of the most significant reasons for presence of life forms.
Question : 2
Consider the following statements.
- The albedo of an object determines its visual brightness when viewed with reflected light.
- The albedo of Mercury is much greater than the albedo of the Earth.
a) Both 1 and 2
b) Neither 1 nor 2
c) Only 2
d) Only 1
Answer »Answer: (d)
Question : 3
Consider the following two statements, one labelled as the Assertion (A) and the other as Reason (R). Examine these two statements carefully and select the correct answer by using the codes given below:
Assertion (A):
To orbit around Sun, the planet Mars takes lesser time than time taken by the Earth.
Reason (R):
The diameter of the planet Mars is less than that of the Earth. Codes:
a) A is true, but R is false.
b) A is false, but R is true.
c) Both A and R are true, but R is not the correct explanation of A.
d) Both A and R are true and R is the correct explanation of A.
Answer »Answer: (b)
The diameter of the planet Mars is less than that of the Earth. Mars has approximately half the diameter of Earth. It is less dense than Earth, having about 15% of Earth’s volume and 11% of the mass. Its diameter is 6,779 kms.
Question : 5
Which one of the following statements is/ are correct with regard to Milky Way?
- It is a spiral galaxy.
- The solar system resides in one of its spiral arms.
a) Both 1 and 2
b) Neither 1 nor 2
c) 2 only
d) 1 only
Answer »Answer: (a)
The Milky Way glaxy is the home of our solar system.
It is very difficult to study this glaxy because the solar system is located within it. It seems to be a spiral glaxy.
Question : 6
The colour of the star is an indication of its
a) Temperature
b) Luminosity
c) Distance from the sun
d) Distance from the earth
Answer »Answer: (a)
The color of the star is an indication of its temperature. The glowing is caused by something called Black-Body radiation, which has to do with the heat energy trying to radiate away in more and more energetic wavelengths.
.Red stars are relatively cool at only a few thousand degrees Celsius, white stars are hot at about ten thousand degrees, and blue stars are the hottest.
GET Universe, solar system and Astronomy PRACTICE TEST EXERCISES
universe & solar system section 1
universe & solar system section 2
universe & solar system section 3
universe & solar system section 4
universe & solar system section 5
universe & solar system section 6
universe & solar system section 7
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universe & solar system section 12
universe & solar system section 13
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