Optics 6 Question 29

31. Two coherent monochromatic light beams of intensities I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam are

(1988,1M)

(a) 5I and I

(b) 5I and 3I

(c) 9I and I

(d) 9I and 3I

Show Answer

Solution:

  1. Imax =(I1+I2)2=(4I+I)2=9I

Imin =(I1I2)2=(4II)2=I



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