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Electromagnetic Waves

CBSE XI Science Physics

Explain the statement :- An oscillator  produces an oscillatory disturbance which moves through the surrounding medium

Asked by kpbhake 1st February 2018 7:02 PM
Answered by Expert

CBSE XII Science Physics Electromagnetic Waves

Why a wave needs a medium to propagate? If so then why light does not need any medium? And why wave travel better in denser medium... and if so then why not light ?

Asked by m_tauqeer_ 15th February 2018 12:11 AM
Answer Verified by Expert

CBSE XI Science Physics

straight c equals vλ space and space straight c equals fraction numerator 1 over denominator square root of straight mu subscript ring operator end root straight epsilon subscript ring operator end fraction equals 3 cross times 10 to the power of 8
So comma space is space straight c equals 3 cross times 10 to the power of 8 ?

Asked by kpbhake 16th March 2018 10:56 AM
Answered by Expert