Question

calculate the speed of light in water if the refractive index of water is 4/3​

Answer 1

$\Large{\textsf{\pink{\underline{ANSWER}}}}$

★$\sf R.I\: of \:water \:=\: \dfrac{Speed \:of \:light \:in\: vacuum}{speed \:of\: light\: in\: water}$

★ $\dfrac{4}{3} = \dfrac{3 \times {10}^{8} }{x}$

★ $x = 2.25 \times {10}^{8} m/s$

★ SPEED OF LIGHT IN WATER

$x = 2.25 \times {10}^{8} m/s$