The rope shown at an instant is carrying a wave travelling towards right, created by a source vibrating at a frequency n. Choose the correct statement(s).
A
The speed of the wave is 4n×ab
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
The medium at a will be in the same phase as d after 43ns
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
The phase difference between b and e is 3π2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
The speed of the wave is 2n×ab
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is C The phase difference between b and e is 3π2 From the figure ab=λ4
Speed =nλ =(n×4ab)
Path difference between b and e is (3λ4) ∴ Phase difference = 2πλ× Path difference =2πλ×3λ4 =3π2
Path difference between a and d =3λ4
Also, time difference between a and d =Tλ×3λ4=3T4=34n
[∵T=1n]
Hence A, C are correct.