Question 39A glass plate 0.9 cm thick has a refractive index of 1.50. How long does it take for a pulse of light to pass through the plate?A.4.5 x 10-11 sB.4.5 x 10-10 sC.3.0 x 10-11 sD.3.0 x 10-11 s [ c= 3.0 x 108 ms-1]Objective Show full explanation