The light of wavelength `6000 overset(*)A` falls normally on a slit of width 2 mm. Calculate the linear width of central maxima on a screen kept 4 m away from the slit.

Explanation

To solve the problem of calculating the linear width of the central maxima on a screen when light of wavelength 6000 Å (angstroms) falls normally on a slit of width 2 mm, we can follow these steps:

### Step-by-Step Solution:

1. **Convert Wavelength to Meters:**
The wavelength given is 6000 Å. We need to convert this to meters.
\[
6000 \, \text{Å} = 6000 \times 10^{-10} \, \text{m} = 6 \times 10^{-7} \, \text{m}
...