To verify the Malus's Law using a pair of Polaroids. 

Very nice demonstration...very useful ..thanks a lot

Best video on youtube sir thank you......😊😊

Dear Arka, thanks for watching this video carefully......

Thank you so much for the explanation!!

Sir ,I observed this vedio till end . thanks for it .

Thank you so much sir, for this experiment.

Thank you sir 🙂🙂

Thanks a lot sir

Thanks sir

thx sir

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There should be experimental data and graph.... You all talk theory for this practical.... It's insufficient information for me atleast