γ-rays are uncharged photons, so they are not deflected by magnetic fields.

OCR header indicates option A is correct; it corresponds to converting 100 MW and 180 MeV per fission into mass consumed per year.

Sommerfeld extended Bohr's model to include elliptical orbits and relativistic corrections; option D is correct.

If energy is released in fusion, the resultant mass m is less than the sum m1 + m2 (mass defect), so (m1 + m2) > m.

In β− decay a neutron transforms into a proton with emission of an electron, so neutron → proton.

CT scanning uses X-rays to obtain cross-sectional images of the body.

CERN is the European Organization for Nuclear Research that runs large particle physics experiments such as those at the LHC (often associated with studies of fundamental particles/early-universe physics).

The SI unit of equivalent dose is the sievert (Sv), represented here (typo) as 'sievert'.

Per the block's provided answer hint, option B is indicated as correct for neutron energies obtained during fission.

Repeating unit cells form the crystal lattice, which is the entire periodic arrangement of the crystal.