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  1. In a primary coil 5 A current is flowing on 220 V. In the secondary coil 2200 V
  2. If n₁, n₂ and n₃ are the fundamental frequencies of three segments into which a string
  3. The amplitude of S.H.M. y=2 (sin 5πt+√2 cos 5πt) is
  4. The maximum wavelength of radiations emitted at 900K is 4 µm. What will be the maximum
  5. The period of oscillation of a mass M suspended from a spring of negligible mass is T