10.4 The stress fringe value $f_o$ for a material was determined to be 39 kN/m when sodium light ($\lambda$ = 589.3 nm) was used in its determination. What would the stress fringe value for the same material be if mercury light ($\lambda$ = 548.1 nm) were used in place of the sodium light?
3.62734 kN/m
3.62734 N/m
36.2734 kN/m
36.2734 N/m