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Related Questions

  1. Two discs of same material and thickness have radii 0.2 m and 0.6 m.
  2. An electron in a circular orbit of radius 0.05 nm performs 10¹⁶ rev/s. The magnetic
  3. Changing magnetic fields can set up current loops in nearby metal bodies
  4. The effective length of magnet is 31.4 cm and its pole strength is 0.8Am.
  5. The 6563 Å line emitted by hydrogen atom in a star is found to be red shifted by 5Å