NEET Class neet Answered
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Asked by brijk456 | 02 Oct, 2019, 11:12: PM
Expert Answer
When two different waves of same frequency and same amplitude but different phases overlap,
total intensity I = I12 + I22 + 2 I1 I2 cosδ .................(1)
where I's are respective intensities of wave and δ is the phase difference.
If both waves are in same phase and same intensity, total intensity = 4I2 ...............(2)
If both waves are with same intensity but phase difference is 90º, total intensity = 2I2 ...............(3)
Ratio of intensities = 4I2 : 2I2 = 2 : 1
Answered by Thiyagarajan K | 03 Oct, 2019, 12:20: AM
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