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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2001
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Q)

A ray of light travelling in air haves wavelength λ, frequency n, velocity v and intensity I. If this ray enters into water then these parameter are$\lambda', n' , v' and I'$ respectively. Which relation is correct?


( A ) $v = v'$
( B ) $\lambda = \lambda'$
( C ) $n = n'$
( D ) $I = I'$

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