PhysicsMedium148×since 2002Q7981The number density of molecules of a gas depends on their distance r from the origin as, n(r)=n0e−αr4n\left( r \right) = {n_0}{e^{ - \alpha {r^4}}}n(r)=n0e−αr4. Then the total number of molecules is proportional to :An0α−3/4{n_0}{\alpha ^{ - 3/4}}n0α−3/4Bn0α−3{n_0}{\alpha ^{ - 3}}n0α−3Cn0α1/4{n_0}{\alpha ^{1/4}}n0α1/4Dn0α1/2\sqrt {{n_0}} {\alpha ^{1/2}}n0α1/2Check answerSkip