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clear
//
//
//
//Variable declaration
lamda=5000*10**-8 //wavelength(cm)
e=1/6000 //number of lines(cm)
//Calculation
theta1=asin(lamda/e)*180/%pi //angle for 1st order(degrees)
theta2=asin(3*lamda/e)*180/%pi //angle for 3rd order(degrees)
theta=(theta2)-(theta1) //difference in angles of deviation(degrees)
//Result
printf("\n difference in angles of deviation is %0.3f degrees",theta)
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