Question

proof that cathode Ray's have kinetic energy​

Answer 1

$\Huge{\bold{\mathrm{\underline{\red{ANSWER}}}}}$

★ Cathode Rays are nothing but the stream of electrons, according to debroglie law lamda=h/p. P is Known as momentum. From JJ Thomson e/m experiment we know that electron have also charge of 1.6×10^-19. hence we can say that electron have both momentum and energy.