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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2000
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Q)

By photo electric effect, Einstein proved :


( A ) $E=mc^2$
( B ) $E=\frac{-Rhc^2}{n^2}$
( C ) $KE=\frac{1}{2}mv^2$
( D ) E= hv

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