Solved papers for JEE Main & Advanced JEE Main Online Paper (Held On 23 April 2013)

done JEE Main Online Paper (Held On 23 April 2013) Total Questions - 1

• question_answer1)                 Bob of a simple pendulum of length \[l\]is mode of iron. The pendulum is oscillating over a horizontal coil carrying direct current. If the time period of the pendulum is T then:     [JEE Main Online Paper ( Held On 23  April 2013 )
  A)
                   \[T=2\pi \sqrt{\frac{l}{g}}\]and damping is smaller than in air alone.
  done clear
  B)
                                          \[T=2\pi \sqrt{\frac{l}{g}}\]and damping is larger than in air alone.
  done clear
  C)
                                          \[T>2\pi \sqrt{\frac{l}{g}}\]and damping is smaller than in air alone.
  done clear
  D)
                                          \[T<2\pi \sqrt{\frac{l}{g}}\]and damping is larger than in air alone.
  done clear
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