EASY
JEE Advanced
IMPORTANT
Earn 100

Assertion: The comets do not obey Kepler's laws of planetary motion.
Reason: The comets do not revolve in elliptical orbits.
(a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b)If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
(c)If Assertion is true but Reason is false.
(d)If Assertion is false but Reason is true.

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Important Questions on Universe
EASY
JEE Advanced
IMPORTANT
Which one of the following nuclear reaction is a source of energy in the sun?

EASY
JEE Advanced
IMPORTANT
Time taken by the light to travel from sun to earth is approximately

EASY
JEE Advanced
IMPORTANT
Sun radiates energy continuously and maintains its brightness, because

EASY
JEE Advanced
IMPORTANT
Surface temperature of the sun is approximately

EASY
JEE Advanced
IMPORTANT
Two stars and are observed at night. Star appears reddish while, star is white. From this we conclude

EASY
JEE Advanced
IMPORTANT
Black hole is

EASY
JEE Advanced
IMPORTANT
The name black hole is given, because

EASY
JEE Advanced
IMPORTANT
The solar constant on the surface of the earth is . What will be its value on the surface of another planet which is about away from sun?
