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  1. On observing light from three different stars P, Q and R, it was found that intensity
  2. A proton is moving in a uniform magnetic field B in a circular path of radius a
  3. Rutherford’s α-scattering experiment concludes that
  4. The electric field in a certain region is given by E=5i ̂-3ĵ kV/m. The potential
  5. The momentum of a photon of energy 1 MeV in kg m/s will be