In a double slit interference experiment the distance between the slits is 0.05 cm and screen is 2 metre away from the slits. The wavelength of light is 6 `xx ` 10-5 cm. The distance between the fringes is
2.21 cm
1.48 cm
0.18 cm
0.24 cm
What is the formula of finding distance b/w the fringes?