Question

answer................ please.....

Answer 1

Answer a)

Refractive index of plastic block=

                                                    =          Sin i / sin r

                                                    =          Sin 50/ sin 30

                                                    =          0.76604/0.5

                                                    =          1.53208

                                                    =          1.532 Answer

Answer b)

 The Single colour Red light beam is called  "Infrared rays" .

Answer c)

Violet has higher Refractive index in comparison to Red Because due to it's highest wavelenght violet gets most refracted so it has highest refractive index in all seven colours of light