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  1. A 1 µA beam of protons with a cross-sectional area of 0.5 sq.mm is moving with a velocity
  2. A particle of mass 100 g is thrown vertically upwards with a speed of 5 m/s. The work
  3. When the disc rotates with uniform angulr velocity.Which of the following is not true?
  4. A paramagnetic sample shows a net magnetisation of 0.8 Am⁻¹, when placed
  5. The energy of a hydrogen atom in the ground state is – 13.6 eV. The energy of a He⁺ ion