L -1, हाइगेंस का तरंग सिद्धान्त ॥ तरंग प्रकाशिकी ॥ अध्याय-10, Physics ॥

[@luxmankashyapluxmankashyap7515]

Very nice sir ji

[@Akkuduggu.6655]

Nice class sir ji

[@scientific.Furqan]

love from Karachi Pakistan

[@scientific.Furqan]

sir excellent lecture of physics

[@Amitsir960]

Thank you bro for your love and support

[@scientific.Furqan]

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[@VivekkumarKumar-qx1il]

Nice class sir