Correct choice is (a) \)=λc0 U

The explanation is: For the given eigenvalue equation, the values of the parameters a and c0 depends upon the physical properties and phenomena involved in the problem. For a bar problem, a=EA and c0=ρA, where E is Young’s modulus, A is cross-sectional area and m is the mass density. For a heat transfer problem, a=kA and c0=ρcA.