A double- slit experiment is performed by a coherent (single frequency/wavelength) beam of laser light.
1, Assume that the two slits are separated by a distance D= 0.1 mm; the distance (H) among the center of the pattern and the second ( m=2) bright region is 1.0 cm; and the distance(L) among the screen and the slits is 1.0 m. utilize the results of this experiment to decide the wavelength of the light.
2. Assume that the frequency of the laser light is doubled. Determined the new spacing among the center of the pattern and the first fringe maximum