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Atomic And Molecular Physics Mock Tests

16 questions available

Atomic And Molecular Physics Mock Test 1

Questions: 16

Sample Questions

GATE Physics
The Landé g-factor for an atomic state with quantum numbers L, S, and J is:
A 1 + [J(J+1) + S(S+1) - L(L+1)]/[2J(J+1)]
B 1 + [J(J+1) - S(S+1) + L(L+1)]/[2J(J+1)]
C 1 + [J(J+1) + S(S+1) + L(L+1)]/[2J(J+1)]
D 1 + [J(J+1) - S(S+1) - L(L+1)]/[2J(J+1)]
GATE Physics
In the normal Zeeman effect, a spectral line splits into how many components in a magnetic field?
A Two
B Three
C Four
D Six
GATE Physics
The selection rule for electric dipole transitions in hydrogen is:
A Δl = ±1, Δm = 0, ±1
B Δl = 0, ±1
C Δl = ±2
D Δl = 0
GATE Physics
The angular part of the hydrogen wavefunction Y_l^m(θ,φ) are eigenfunctions of:
A L² and L_z
B H and L²
C H and L_z
D L_x and L_y
GATE Physics
The Bohr radius a₀ (the most probable radius of the electron in the hydrogen ground state) is approximately:
A 0.529 Å
B 1.058 Å
C 0.176 Å
D 5.29 Å
GATE Physics
The Pauli exclusion principle states that:
A no two fermions can occupy the same quantum state
B no two particles can have the same energy
C electrons always pair up with opposite spins
D bosons can occupy the same quantum state
GATE Physics
The ground state energy of a helium ion (He⁺) is:
A -54.4 eV
B -13.6 eV
C -27.2 eV
D -108.8 eV
GATE Physics
The Zeeman effect refers to:
A splitting of spectral lines in a magnetic field
B splitting of spectral lines in an electric field
C broadening of spectral lines due to temperature
D shifting of spectral lines due to pressure

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