wiz-icon
MyQuestionIcon
MyQuestionIcon
15
You visited us 15 times! Enjoying our articles? Unlock Full Access!
Question

Waves from two sources superpose on each other at a particular point, amplitude and frequency of both the waves are equal. The ratio of intensities when both waves reach in the same phase and when they reach with the phase difference of 90 will be

A
1:1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
2:1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
2:1
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
4:1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 2:1
Let I1 be the intensity when both waves of intensity I reach in the same phase and I2 be the intensity when both waves reach with the phase difference of 90.
Then, we have
I1=I+I+2I×Icos0=4I
and I2=I+I+2I×Icos90=2I
I1:I2=2:1

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Wave Interference
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon