Two Identical Strings Have the Same Length and Same Mass $f _ { \mathrm { nb } } = \frac { 1 } { 4 } f _ { \mathrm { nA } }$

Multiple Choice

Two identical strings have the same length and same mass per unit length.String B is stretched with four times as great a tension as that applied to string A.Which statement is correct for all n harmonics on the two strings,n = 1,2,3...?

A) $f _ { \mathrm { nb } } = \frac { 1 } { 4 } f _ { \mathrm { nA } }$ .
B) $f _ { \mathrm { nb } } = \frac { 1 } { 2 } f _ { \mathrm { nA } }$ .
C) $f _ { n , B } = \sqrt { 2 } f _ { n , A }$ .
D) f_n,B = 2f_n,A.
E) f_n,B = 4f_n,A.