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KEAM 2021 Physics and Chemistry Solved Paper
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© examsnet.com
Question : 57
Total: 120
If
T
be the time period of a planet around the Sun and
d
is its mean distance from the Sun, then according to Kepler's third law
T
∝
d
T
∝
d
2
T
2
∝
d
3
T
2
∝
d
T
2
∝
d
−
3
Validate
Solution:
According to Kepler's third law, the square of time period
(
T
)
of revolution of a planet around the sun is directly proportional to the cube of semi-major axis
(
d
)
of its elliptical path, i.e.
T
2
∝
d
3
.
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