govindakhanda100 Asked: November 2023 which is a physical quantity in the following a electric potential b potential diffrence
govindakhanda100 Asked: November 2023 if a light is an electromagnetic wave then it do not need any medium to propagate like sound, then why the speed
govindakhanda100 Asked: November 2023 if a light is an electromagnetic wave then it do not need any medium to propagate like sound, then why the speed affect