According to the investigation below, please answer the question 2, 4 and 5 in details. 2. What graph will we plot to determine the wavelength of red light, and how will we use that plot to determine the wavelength of a HeNe laser?4. Use your trendline to identify the wavelength of the light that you determined in the experiment.5. Compare your experimental value with the theoretical value - the theoretical value is 632.8 nm

In this investigation we will be using the interference pattern created by a diffraction grating to measure the wavelength of a red Helium-Neon laser. Young's Double Slit Experiment: From the trigonometric approximations we discussed: n = - A = dAx Using this relationship we will be varying the distance between the slits and the screen(L), and measuring the impact on the change in the separation between maxima(Ax) to experimentally determine the wavelength of red light List the independent, dependent and controlled variables in the experiment. Independent variable: L - distance between slit and bound Dependent variable: Xn distance between fringes Control variable: + Distance between laser and split + Distance between split and the wall + The position of each stand 2. What graph will we plot to determine the wavelength of red light, and how will we use that plot to determine the wavelength of a HeNe laser? 3. Attach a computer generated graph below, including all relevant titles, units, a trendline, and R value. The relationship between L and AX Xn - 0.0202*x + 0.870-05 R= = 0.994 6.06 0.05 0.04 0.02 0.09 1.5 2.0 2.5 3.5 L(m) 4. Use your trendline to identify the wavelength of the light that you determined in the experiment. 5. Compare your experimental value with the theoretical value - the theoretical value is 632.8 nm