Index Of Pattycake (jpg) -html -php -asp -htm -jsp Index Of Refraction In Quartz?

Index of refraction in quartz? - index of pattycake (jpg) -html -php -asp -htm -jsp

A ray of light has an angle of 27.0 ° C in a quartz block and a refraction angle of 18.5 °. What is the refractive index of the quartz block?