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  1. The angle of a prism is A. One of its refracting surfaces is silvered
  2. The electric field part of an electromagnetic wave in a medium is represented by
  3. If a magnetic substance is kept in a magnetic field, then which of the following
  4. The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.
  5. On the horizontal surface of a truck a block of mass 1 kg is placed (µ=0.6) and truck