To show two-source interference of light, a light beam is divided into two beams by two slits $0.50\,\text{mm}$ apart. The two beams fall on a laboratory wall that is $4.0\,\text{m}$ away. The wavelength of the light is $550\,\text{nm}$. What is the separation of two neighbouring interference fringes produced on the laboratory wall?
- A$0.22\,\text{mm}$
- B$0.44\,\text{mm}$
- C$2.2\,\text{mm}$
- D$4.4\,\text{mm}$