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+//ques-35.8
+//Calculating frequency of oxygen and hydrogen bond
+clc
+k=770;//force constant (in N/m)
+r_m=1.563*10^-27;//reduced mass (in kg)
+f=(1/(2*%pi))*sqrt(k/r_m);
+w_n=f/(3*10^8);
+printf("The frequency required is %.3f*10^14 Hz and wave number is %d /cm.",f*10^-14,w_n/100);