An open pipe is in resonance in 2nd harmonic with frequency

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

f_1

. Now one end of the tube is closed and frequency is increased to

f_2

such that the resonance again occurs in

n

th harmonic. Choose the correct option. (1)

n=3, f_2 = \frac{3}{4}f_1

(2)

n=3, f_2 = \frac{5}{4}f_1

(3)

n=5, f_2 = \frac{3}{4}f_1

(4)

n=5, f_2 = \frac{5}{4}f_1