TG EAMCET 4 May 2025 Shift 1 Paper

The highest intensity when two light waves mix is given by:
Imax=(√I1+√I2)2
Case 1: Both waves have the same intensity
If both intensities are equal, let them be I1=I2=I0.
I=(2√I0)2=4I0
This means the maximum intensity is 4 times the intensity of one wave.
So, we can write: I0=‌

I

4

Case 2: One wave is four times stronger
If the first wave is four times stronger, I1=4I0 and I2=I0.
Maximum intensity becomes:
‌I′=(√4I0+√I0)2
‌I′=(2√I0+√I0)2=(3√I0)2=9I0
Now, substitute I0=‌

I

4

:
I′=9×‌

I

4

=‌

9I

4