The interference pattern is obtained with two coherent light sources of intensity ratio, n . In the…

The interference pattern is obtained with two coherent light sources of intensity ratio, n. In the interference pattern, the ratio, ImaxIminImax+Imin will be
  1. nn+1
  2. 2nn+1
  3. nn+12
  4. 2nn+12

Solution

I1I2=n.

Imax=I1+I22=n+12I2.

Imin=I1-I22=n-12I2.

Imax-IminImax+Imin=4n2n+1=2nn+1

Asked in: NEET 2016 (Phase 2)

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