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  1. A microscope is having objective of focal length 1 cm and eye-piece of focal length 6 cm.
  2. A road of width 20 m forms an arc of radius 15 m,its outer edge is 2m higher than
  3. A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire
  4. A body takes 5 minute for cooling from 50⁰C to 40⁰C. Its temperature
  5. The apparent weight of the body of mass 10 kg when it is travelling upwards with