In a diffraction experiment, the screen is placed 2 m away from a narrow slit. The first minimum observed is at 5 mm on either side of the central maximum for wavelength of $5 × 10^{-5} cm$. The width of the slit is: |
0.01 cm 0.02 cm 0.11 cm 0.12 cm |
0.02 cm |
The correct answer is Option (2) → 0.02 cm |