List of top Physics Questions asked in Tripura Joint Entrance Examination

If the dimensional unit of magnetic permeability ($ \mu $) is given by $ [MLT^{-2}I^{-2}] $, then the dimensional unit of electric permittivity ($ \epsilon $) will be
A and B are two radioactive samples of half-life 12 hours and 16 hours respectively. The number of nuclei in them are in the ratio 2:1. After 48 hours, this ratio will become
At 300 K, both electron and hole density in an intrinsic silicon crystal is $ 15 \times 10^{15} \, \text{m}^{-3} $. When it is doped with indium, the hole density becomes $ 4.5 \times 10^{22} \, \text{m}^{-3} $. The extrinsic electron density will be
An electron of charge e and mass m is kept in a uniform electric field E, then the acceleration of the electron will be
27 water droplets of radius 3 mm each and charged with the same charge are coalesced to form a big water drop. The ratio of surface charge density of the small drop and large drop will be