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Homework Help: Name a physical quantity used to measure optical density of a Medium

  1. Feb 15, 2008 #1
    1.A rectangular loop and a Circular loop are moving out of a uniform magnetic field to a field free region with a constant velocity V.In which loop the induced e.m.f is constant during the motion of the loop.

    2.Name two Physical quantifies other than velocity,wavelength and C,associated with electromagnetic waves.

    3.Name a physical quantity used to measure optical density of a Medium.

  2. jcsd
  3. Feb 15, 2008 #2


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    In a rectangular loop what is the overall emf induced? In a circular coil, what is the emf induced?

    2) What do you think defines waves?
  4. Feb 15, 2008 #3
    i've given the complete question.nothing more to it.
    i guess the ans to second one is electric and magnetic field.just checking
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