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36. Reflecting power of a heavenly body is albedo
A. atmosphere of a planet
B. absorbing power of a planet
C. escape velocity on a planet
D. reflecting power of a heavenly body
Explanation:
37. One astronomical unit is the distance
A. travelled by light in one year
B. of the Earth from the Sun
C. of Pluto from the Sun
D. of mercury from the Sun
Explanation:
38. The surface of a planet is hot due to
A. reflection of solar radiation
B. nuclear fusion
C. cosmic fusion
D. absorption of solar radiation
Explanation:
39. Which one of the following is self-luminous
A. Venus
B. Moon
C. Polaris
D. Mars
Explanation:
40. Surface temperature of a planet can be determined by using
A. Kepler’s law
B. Parallax method
C. Stefan’s law
D. Absorption of solar radiation
Explanation:
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