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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 plantes P,Q and R are `V_P V_Q and V_R` respectively. Then

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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