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  1. A microscope is having objective of focal length 1 cm and eye-piece of focal length 6 cm.
  2. Parsec is the unit of
  3. Two point charge +9e and +e are at 16 cm away from each other.
  4. The molar specific heat at constant pressure of an ideal gas is (7/2)R. The ratio
  5. If rope of lift breaks suddenly, the tension exerted by the surface of the lift