WBJEE PRACTICE PAPER 2012 PHYSICS
Thu, 16/05/2013 - 7:42pmWBJEE 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
