Subject: Physical Chemistry · Chapter: Quantum Chemistry · Topic: Perturbation Theory · Exam: NET JUNE 2012 · Marks: 2 · Difficulty: Easy
The following are the three statements about perturbation theory(A) Second order perturbation correction to the ground state energy is ALWAYS negative.(B) Sum of the zero${ }^{\text{th}}$ order and the first order corrections to the ground state energy is ALWAYS greater than the exact ground state energy.(C) Sum of the zero${ }^{\text{th}}$ order and first order corrections to the ground state energy is less than the exact state energy.From the following which one is correct?
(a)Only A is true
(b)Both A and B are true
(c)Only C is true
(d)Both B and C are true
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.