Young's double slit experiment is carried out using microwaves of
wavelength `lambda=3cm`. Distance between the slits is `d= 5cm` and the distance
between the plane of slits and the screen is `D=100cm`.
(a) Find total number of maxima and
(b) their positions on the screen.

Explanation

To solve the problem, we will follow these steps:

### Step 1: Identify the parameters
We have:
- Wavelength of microwaves, \( \lambda = 3 \, \text{cm} \)
- Distance between the slits, \( d = 5 \, \text{cm} \)
- Distance from the slits to the screen, \( D = 100 \, \text{cm} \)

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