Question
vₑ and vₚ denotes the escape velocity from the earth and another planet having twice the radius and the same mean density as the earth. Then
Options :
vₑ = vₚ
vₑ = vₚ/2
vₑ = 2vₚ
vₑ = vₚ / 4
Answer :
vₑ = vₚ/2
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