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  1. Wires A and B are made from the same material. A has twice the diameter and three times
  2. In forward biasing of the p-n junction
  3. Two coherent monochromatic beams of intensities I and 4I respectively, are superposed.
  4. A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
  5. The radius of the convex surface of a plano-convex lens is 20 cm and the refractive index