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When a block of mass \(M\) is suspended by a long wire of length \( L\), the length of the wire becomes \((L+l)\). The elastic potential energy stored in the extended wire is:
  • NEET (UG) - 2019
  • NEET (UG)
  • Physics
  • potential energy
The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This inductor is of inductance
  • NEET (UG) - 2018
  • NEET (UG)
  • Physics
  • potential energy
The potential energy of a long spring when stretched by 2 cm is U. If the spring is stretched by 8 cm the potential energy stored in it is
  • NEET (UG) - 2006
  • NEET (UG)
  • Physics
  • potential energy

Energy E of a hydrogen atom with principal quantum number n is given by E = \(-\frac{13.6}{n^2}eV\). The energy of a photon ejected when the electron jumps from the n = 3 state to the n = 2 states of hydrogen is approximately

  • NEET (UG) - 2004
  • NEET (UG)
  • Physics
  • potential energy
Two bulbs of  \((40W,\ 200V)\) and \((100 W,\ 200V)\). Then correct relation for their resistance:
  • NEET (UG) - 2000
  • NEET (UG)
  • Physics
  • potential energy
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