Question

Consider an expanding sphere of instantaneous radius ? whose total mass remains constant. The expansion is such that the instantaneous density `rho` remains uniform throughout the volume. The rate of fractional change in density `((dp)/(rhodp))` is constant. The velocity v of any point on the surface of the expanding sphere is proportional to
A. R
B. `R^(3)`
C. `1/R`
D. `R^(2//3)`

Answer 1

Correct Answer - A