clear
//
//
//

//Variable declaration
D8=1.42     //diameter of 8th ring(cm)
D8dash=1.25     //changed diameter of 8th ring(cm)

//Calculation
mew=D8**2/D8dash**2     //refractive index of liquid

//Result
printf("\n refractive index of liquid is %0.2f  ",mew)