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  1. A 200 W sodium street lamp emits yellow light of wavelength 0.6 µm
  2. A 50 ohm galvanometer gets full scale deflection when a current of 0.01 A passes
  3. Two particles A and B having equal charges +6C, after being accelerated
  4. The sodium nucleus ₁₁Na²³ contains
  5. The direction of magnetic line of force of a bar magnet is