Please I really need help with this. Please :(

Link to the online simulation: https://ophysics.com/l5b.html

PHYS 2092 Lab 8: Diffraction Grating INSTRUCTIONS Introduction In this lab, you will study diffraction patterns produced by a monochromatic light source incident on a diffraction grating, a device that is made up of thousands of very closely spaced slits. You will be using an online simulation on the oPhysics website called Diffraction Grating Laser Lab: https://ophysics.com/15b.html Theory When we illuminate a system of N closely spaced slits from one side, each of these slits become a source of light wave that diffracts, or spreads out, behind the slit. We call this device of multiple slits a diffraction grating. Figure 8.1 shows one order of diffraction from the diffraction device to a viewing screen. This light ray is a representation of the interference of light sources from all the slits in the diffraction grating where the spacing between two consecutive slits is d. The angle gm of the mth order diffraction of N light waves from N different slits, all in phase with each other, is such that: dsin(6m) = m]. m = o, 1, 2, 3, (8.1) There will be bright constructive interference fringes on the screen at the angles 9m. We can use the distance L from the grating to the screen to obtain the position ym of the mth maximum using: ym = L tan(6m) (8.2) The integer m is called the order of the diffraction. Normally, the spacing d in a grating is very small. Because of that, we customarily characterize a grating by the number of lines per millimeter. For example, a grating with 1000 lines per millimeter will have a value of d = 1.00 X 10'6m since a piece on the grating having a 1 mm length, which is a thousandth of a meter, will have 1000 lines. Screen Device Figure 8.1: Geometry of the setup Grating in Place Lens to Grating Distance (3-10m) 10 Grating lines per mm (200-500) 300 Wavelength (400-700 nm) 532 Diffraction grating Laser" Screen Lens to grating distance E3 Figure 8.2: Default view of the simulation setup Procedure Go to the link provided above to launch the simulation. Take some time to familiarize yourself with the tools of the simulation. Change the "Grating lines per mm" to 500 lines per mm. With this setting, what is the value of the spacing? We will keep the distance from the grating to the screen at 10 m. Now, set the wavelength to 700 nm. Observe the color change of the laser when you vary the wavelength (the dot on the screen will change color). Report this color on Data Table 8.1. Use these values in equation 8.1 to predict the angle of the first order and second order diffractions. That means, what is the diffraction angle for m = 1 and m = 2.laser. Now, click on the checkbox labelled \"Gating in Place\" to place the grating in front of the ' Use the positions on the ruler above the setup to measure the ym values for m = 1 and 2. ' Use these ym values and the distance L to calculate am for each order. What is the percentage difference between the theta values in each order? Take a screenshot as evidence and include it on your Answer Sheet. ' Repeat the procedure for l = 532 nm and then for I1 = 400 nm. Data Table 8.1 d = L = l COLOR Theoretical 91 Theoretical 91 700 nm 3'] 3'2 Experimental 91 Experimental 92 % difference % difference ll COLOR Theoretical 91 Theoretical 91 532 nm Y1 3'2 Experimental 91 Experimental 92 % difference % difference 11 COLOR Theoretical (91 Theoretical (91 400 nm yl 3'2 Experimental 91 Experimental 92 % difference % difference Data Analysis Show your data analysis work on your Answer Sheet, as per the instructions from the procedure Conclusions Write a brief conclusion on your Answer Sheet, based on what you observed in this experiment