Wbjee practice paper

WBJEE PRACTICE PAPER 2012 PHYSICS

WBJEE PRACTICE PAPER

1. Bohr’s theory of hydrogen atom did not explain fully
  A. diameter of H atom
  B. emission spectra
  C. ionisation energy
  D. the fine structure of even hydrogen spectrum

2. A current loop placed in a non-uniform magnetic field experiences :
  A. a force of repulsion
  B. a force of attraction
  C. a torque but not force
  D. a force and a torque