Question

1. Calculate the wavelength of the monochromatic light that produces a fifth-order dark fringe at an angle of 3.8° with a slit separation of 0.042 mm. [ans: 6.2 × 10?? m] 2. Two slits are separated by a distance of 0.050 mm. A monochromatic beam of light with a wavelength of 656 nm falls on the slits and produces an interference pattern on a screen that is 2.6 m from the slits. Calculate the fringe separation at the centre of the pattern. [ans: 3.4 cm] 3. The third-order dark fringe of light with a wavelength of 652 nm is observed when light passes through two double slits onto a screen. The slit distance is 6.3 × 10?? m. At what angle is the fringe observed? [ans: 15°]

          1. Calculate the wavelength of the monochromatic light that produces a fifth-order dark fringe at an angle of 3.8° with a slit separation of 0.042 mm. [ans: 6.2 × 10?? m]
2. Two slits are separated by a distance of 0.050 mm. A monochromatic beam of light with a wavelength of 656 nm falls on the slits and produces an interference pattern on a screen that is 2.6 m from the slits. Calculate the fringe separation at the centre of the pattern. [ans: 3.4 cm]
3. The third-order dark fringe of light with a wavelength of 652 nm is observed when light passes through two double slits onto a screen. The slit distance is 6.3 × 10?? m. At what angle is the fringe observed? [ans: 15°]

1. Calculate the wavelength of the monochromatic light that produces a fifth-order dark fringe at an angle of 3.8° with a slit separation of 0.042 mm. [ans: 6.2 × 10?? m]
2. Two slits are separated by a distance of 0.050 mm. A monochromatic beam of light with a wavelength of 656 nm falls on the slits and produces an interference pattern on a screen that is 2.6 m from the slits. Calculate the fringe separation at the centre of the pattern. [ans: 3.4 cm]
3. The third-order dark fringe of light with a wavelength of 652 nm is observed when light passes through two double slits onto a screen. The slit distance is 6.3 × 10?? m. At what angle is the fringe observed? [ans: 15°]

Added by Agnes J.

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