Question28:-The value of the commutator *[x*(4)° , *p_(x)]° is

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Correct Answer:- Option-D
Question29:-Application of time independent perturbations to linear stark effect of hydrogen atom
A:-Completely removes degeneracy of n = 2 level and splits it into four levels
B:-Partially removes degeneracy of n = 2 levels and splits it into three levels
C:-Partially removes degeneracy of n = 2 level and splits it into two levels
D:-Does not remove degeneracy to any extent
Correct Answer:- Option-B
Question30:-The wave function of a particle is given by ‘Psi =(1)/(sqrt(2))phi_(0)’ , where ‘phi_(0)° is the normalized eigen
function with energy ‘E_(0)°. The expectation value of the Hamiltonian in the state * psi’ is
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D:-sqrt(2)E_(0)°
Correct Answer:- Option-A
Question31:-For a one dimensional potential well specified by V(x) = 0 for -a < x < a and V(x) = ‘oo for |x| > a, the zero
point energy is
A:-Some value greater then zero
B:-Some value less than zero
C:-Equal to zero

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Correct Answer:- Option-A
Question32:-The total spin angular momentum S of a system of three electrons is
A:*(1)/(2)°
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‎D:-*(1)/(2) and (3)/(2)°
Correct Answer:- Option-D
Question33:-The phase shifts measured for the elastic scattering of 50 MeV neutrons from a nucleus are ‘delta_(0)=
90*(@)* ; ‘delta_(1) = 60*(@)° . The total cross section is
A:~(13pi)/(k*(2))°
(4pi)/(k*(2))°
(pi)/(k*(2))°
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Correct Answer:- Option-A
Question34:-For a Hermitian operator, the eigen values are
A:-Zeros
B:-real
C:-complex
D:-imaginary
Correct Answer:- Option-B
Question35:-The eigen functions of angular momentum operator are
A:-Bessel function
B:-Gamma function
C:-Hermite polynomials
D:-Spherical harmonics
Correct Answer:- Option-D