An electron collides with a free molecule initially in its ground state. The collision leaves the molecule in an excited state that is metastable and does not decay to the ground state by radiation. Let K be the sum of the initial kinetic energies of the electron and the molecule, and P↖{→} the sum of their initial momenta. Let K' and P↖{→}' represent the same physical quantities after the collision. Then

Question

An electron collides with a free molecule initially in its ground state. The collision leaves the molecule in an excited state that is metastable and does not decay to the ground state by radiation. Let K be the sum of the initial kinetic energies of the electron and the molecule, and P↖{→} the sum  of their initial momenta. Let K' and P↖{→}' represent the same  physical quantities after the collision. Then

Examsnet · Accepted Answer

Correct Answer is : K>K′,→P=→P′

KVPY SB SX Exam 2011 Question Paper