1.

Consider a spherical planet of radius R . Its density varies with the distance of its centre t as rho=A-Br, where A and B are positive constants. Now answer the following questions. For B=0 , pressure due to gravitation force at a distance r( ltR) from the centre of the planet is

Answer»

`(2)/(3)piGA^(2)(R^(2)-r^(2))`
`(1)/(3)piGA^(2)(R^(2)-r^(2))`
`(3)/(2)piGA^(2)(R^(2)-r^(2))`
`(4)/(3)piGA^(2)(R^(2)-r^(2))`

Answer :A


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