A narrow beam of 100eV electrons is fired at two parallel slits very close to each other. The distance between the slits is 10Å. The electrons waves after passing through the slits interfere on a screen 3m away from slits and form interference fringes. Find the width of the fringe.

Explanation

To solve the problem of finding the width of the fringe produced by a narrow beam of 100 eV electrons passing through two parallel slits, we can follow these steps:

### Step 1: Calculate the de Broglie wavelength of the electrons.
The de Broglie wavelength (\( \lambda \)) is given by the formula:
\[ \lambda = \frac{h}{mv} \]
where:
...