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  1. An automobile moves on a road with a speed of 54 km h⁻¹. The radius of its wheels
  2. The logic behind NOR gate is that it gives
  3. A train moving at a speed of 220 ms⁻¹ towards a stationary object
  4. Photoelectric emision occurs only when the incident light has more than a certain minimum
  5. λ₁ and λ₂ are used to illuminate the slits. β₁ and β₂ are the corresponding fringe