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Two spherical planets P and Q have the s...

Two spherical planets `P` and `Q` have the same uniform density `rho`, masses `M_(P)` and `M_(Q)` and surface areas `A` and `4A`, respectively. A spherical planet `R` also has uniform density `rho` and its mass is `(M_(P)+M_(Q))`. The escape velocities from the planets `P, Q` and `R`, are `V_(P), V_(Q)` and `V_(R)`, respectively.

A

`V_(Q)gtV_(R)gtV_(p)`

B

`V_(R)gtV_(Q)gtV_(p)`

C

`V_(R)//V_(P)=3`

D

`V_(P)//V_(Q)=(1)/(2)`

Text Solution

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The correct Answer is:
B, D
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