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  1. A 200 W sodium street lamp emits yellow light of wavelength 0.6 µm
  2. A 1 µA beam of protons with a cross-sectional area of 0.5 sq.mm is moving with a velocity
  3. The order of distance of an electron revolving in an atom from nucleus is
  4. A uniform force of (3i+j) Nacts on a particle of mass 2 kg.Hence the particle is displaced
  5. A car accelerates from rest at constant rate for first 10s and covers a distance x.