MCQs
Total Questions : 639
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Answer: Option A. -> Betelgeuse
Answer: (a)
Answer: (a)
Answer: Option A. -> 1 and 4
Answer: (a)
Answer: (a)
Question 13. 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:
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:
Answer: Option B. -> A is false, but R is true.
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. It takes more time than Earth to orbit around the sun.
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. It takes more time than Earth to orbit around the sun.
Answer: Option A. -> eclipses occur only when the moon is on or near the path
Answer: (a)The ecliptic is the apparent path of the Sun on the celestial sphere, and is the basis for the ecliptic coordinate system. It also refers to the plane of this path, which is coplanar with both the orbit of the Earth around the Sun and the apparent orbit of the Sun around the Earth. Eclipses occur only when the moon is on or near this path.
Answer: (a)The ecliptic is the apparent path of the Sun on the celestial sphere, and is the basis for the ecliptic coordinate system. It also refers to the plane of this path, which is coplanar with both the orbit of the Earth around the Sun and the apparent orbit of the Sun around the Earth. Eclipses occur only when the moon is on or near this path.
Answer: Option D. -> 2 1 4 3
Answer: (d)
Answer: (d)
Answer: Option D. -> 1 only
Answer: (d) 1 Sidereal year = 365.2564 days;1 Tropical year = 365.2422 days;So difference is 0.0142 days.
Answer: (d) 1 Sidereal year = 365.2564 days;1 Tropical year = 365.2422 days;So difference is 0.0142 days.
Answer: Option C. -> Sun
Answer: (c)The distance from sun to Earth is called an astronomical unit (AV) one of the Nearest star sirius is more than thousands of AV distance from Earth.
Answer: (c)The distance from sun to Earth is called an astronomical unit (AV) one of the Nearest star sirius is more than thousands of AV distance from Earth.
Answer: Option C. -> Jupiter
Answer: (c)
Answer: (c)
Answer: Option B. -> None
Answer: (b)Lunar Eclipse:The moon is said to be in eclipse when the Earth comes between the moon and the sun. The shadow cast by the Earth on the moon is called an eclipse. Solar Eclipse:The sun is said to be in eclipse when the Moon comes between the Sun and the Earth. There is either a partial or total obstruction of the Sun’s light when viewed from the Earth.
Answer: (b)Lunar Eclipse:The moon is said to be in eclipse when the Earth comes between the moon and the sun. The shadow cast by the Earth on the moon is called an eclipse. Solar Eclipse:The sun is said to be in eclipse when the Moon comes between the Sun and the Earth. There is either a partial or total obstruction of the Sun’s light when viewed from the Earth.
Answer: Option A. -> Corona
Answer: (a)
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low-density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun but is many times larger.
A corona is a type of plasma “atmosphere” of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
The word “corona” itself derived from Latin, meaning crown. The high temperature of the corona gives it unusual spectral features
Answer: (a)
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low-density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun but is many times larger.
A corona is a type of plasma “atmosphere” of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
The word “corona” itself derived from Latin, meaning crown. The high temperature of the corona gives it unusual spectral features
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