1.

What should be the radius of a planet with mass equal to that of earth and escape velocity on its surface is equal to the velocity of light. Given that mass of earth is `M=6xx10^(24)kg`.A. 6mmB. 9mmC. 18mmD. 3mm

Answer» Correct Answer - B
`v_(c)=sqrt((2GM)/(R))rArrR=(2GM)/(v_(e)^(2))approx 9mm`


Discussion

No Comment Found

Related InterviewSolutions