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AIPMT 2011 Physics and Chemistry Solved Paper
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© examsnet.com
Question : 70
Total: 100
A planet moving along an elliptical orbit is closest to the sun at a distance
r
1
, and farthest away at a distance of
r
2
. If
v
1
and
v
2
are the linear velocities at these points respectively, then the ratio
v
1
v
2
is:
(
r
1
/
r
2
)
2
r
2
∕
r
1
(
r
2
/
r
1
)
2
r
1
r
2
Validate
Solution:
Using angular momentum conservation
L
1
=
L
2
mr
1
v
1
=
mr
2
v
2
r
1
v
1
=
r
2
v
2
v
1
v
2
=
r
2
r
1
© examsnet.com
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