W AutoSave @ Off H U Lab 8 Geometric optics - Using PhET Simula... Search Jose Contreras JC X File Home Insert Draw Design Layout References Mailings Review View Help Table Design Layout Comments Editing Share Calculate the angle of deviation by using equation (4band compare with measured value. Use the refractive Index of glois found In Case C. RESULTS TABLE D: TOTAL INTERNAL REFLECTION All values are measured values unleis mentioned. TABLE H: FOCAL LENGTH OF A CONVEX LENS Attach of leon one Image of each case with your report. Angle of number Angle of Critical Angle Percent Error In Inclglance at Retraction a Calculated Critical Angle Maccured Measured Measured Calculated Foco TABLE A: LAW OF REFLECTION crtical point, Le attical point from known Distance from Distance from Butance from Length by measured Len to Object Lens to Image equation # Trial number Angle of Incidence, & | Angle of Reflection, 8. Percent Difference and n2 Between & and e Water-Air Glow-Ar TABLE E: TOTAL INTERNAL REFLECTION AGAIN Material Angle of Angle of Critical Angle Percent Error O TABLE : LAW OF REFRACTION number holdance at Refraction of Calculated Average value of macsured Focal Length emical point, from known Argile Percent amor between average of the two focal lengths Material Mecrured Measured Calculated Average of Percent Bror 1.2. measured values of n uribe Angle of Angle of Refractive three values In refractive critical angle and ra naldance, Refraction Index of refractive Index tegn. 1) Water-Air Index Mymery-A-A Water Water TABLE F: REFRACTION LIGHT RAY SHIFT Water Trial Angle of Trickness 'h at calculated Jumba Percent Glow Incidence actaction the square Vous of Shift In the the Shift Mystery A Mystery A X Mystery A TABLE C. LAW OF REFRACTION AGAIN TABLE G: DEVIATION OF LIGTH FROM A PRISM Material Trial Measured Measured Calculated Average of Percent Error number Angle of Angle of Refractive three values in refractive Angle of Prism Macured Calculated Incidence, Rafraction index = of refractive index agractor Angle of Angle of amor In Leqs 11 insix Devotion and a of Deviation Mystery B Mystery B X Mystery B Page 9 of 9 2553 words DX Text Predictions: On Accessibility: Investigate I Focus + 50% 1 69"F 4:13 PM Windy Q Search W A 12/8/2023W AutoSave @ Off H U Lab 8 Geometric optics - Using PhET Simula... Search Jose Contreras JC X File Home Insert Draw Design Layout References Mailings Review View Help Table Design Layout Comments Editing Share CASE D: Total Internal Reflection CASE F: Refraction Light Ray Shit (see figure 7) CASE H: Focal Length of a Convex Lens (328 figures 41 . After opening the simulation, select "INTRO". After opening the simulation, select "PRISM". . Open the simulation: Geometric Optics. 2. Select the material where the lover Is as "WATER", and that on the lower side or "AIR" (.e. 2. From the bottom panel, select the Square. Set Reflectors Off. Tum on Normal. 2. Select Principal Rays and Screen. Select some values of Curvature, Refractive Index and the laser beam & going from water Into air) 3. Select the Environment es Air. Select Object: a: Clea. Diemater of the lana. lee 3. Set the lover to a small angle .e. close to the normal]. Tum on the lower. 4. Set the lover to ony arbitrary angle, pointing to the square. Tum on the lover. The laser Select on object, preferably a panel, arrow or star lonything with a sharp point so that It to 4. Increase the engle slowly and sbeeme the refracted ray. At some angle, the refracted roy beam should come out from the back side. Rory to measure the distance). Place It a little distance away from the X. will become parallel to the water-air surface. Beyond this point, when the angle Is further A. Select the Bulge and macsure the absence from the lens to the tip of the object. (Measure Increased, there kno refracted ray, only a reflected ray. This Is Total Intamol Reflection. The 5. Note (figure out howl, the podtion of the refracted roy coming out of the plan on the the point where the rays Join together. This t the Object edfiance 'o'. Now measure the angle that the Incident ray makes of the point at which the refracted roy becomes other side. mage diston tance to' from the lane to the Image (to the point where the rays John). Now parallel to the glais surface (Le. angle of refraction - 90), Is called the Critical Angle. Une 8. Change the material of the Object to "Air". This will couse the roy to go straight (since measure the distance from the lens to the point marked "X' on the principal ends. This is the the Protractor to measure the angle of Incidence at this point. Use equation 3 to compare refractive Inclass of environment and square are the same]. Note the position of this roy 'acal length "'. In all cases, keep the ruler at the center of the lans (not Its surface). the calculated and measured values of the Critical Angle. 7. Macsure the olitenos that the ray shifts when the Object Is Air and when It to Gloss Ifigure Note the data In Table H, god ako calculate and note the food length, ", of the lens by 3. Repeat to find the critical angle for the GLASS - AIR Interface. But how to do this. Enter the results In Table s. using equation S. 8. Enter the results In Table D 8. Macsure the thickness of the square. Enter all data In Table F. 3. Repeat for several amarant positions of the object. How object. Have at least one portion where you Use equation s to calculate the peltt- and compore with your measured value. get a virtual Image [Le. when object is between lans and the focal length. In the CASE E: Total Infernal Reflection Again so8 Nqure s calculation for "t', keep 'o' or a negative number for this core only. 1. After opening the simulation, select "PRISM". 2. Select the semi-circular plblack and bring It to the middle of the screen. Its straight side should be vertical. d = =(-or . Select the Environment as Alr, and semi er object of Glass. Tum on Normal Tum off Reflections. Emergent 4. Tum on the lazer. Set the laver to on gnole about 40" with the horizontal FIGURE 7 Ray place the cursor In the object, with lot click hold the object and move It it should "rotoral to a podtion so that the lower beam entering " is of zero degrees to the sumac This is when the beam is directly over (Le. parallel to] the normal. It will now be exiting the Normal object from center of the flat side, which Is also the center of the circle forming the curved Fide. Nowrotate the Object by holding It from the little thing at Its bottom. The object must not move. only rotate. This will rotate It about its center so that the beam is always exding from the center of the flat side. Keep rotating the object slowly, until the exiting beam is parallel to the flat surface. If you Incident Ray tum it a bit more, the beam will have Total Intemal Reflection. Use the protractor to measure the angle on Incidence Inade the object at the flat surface at the point of Tote Internal Reflection. he and s of refraction should be 90". Use equation 3 to compare the calculated and measured values of the Critical Angle. CASE G: Deviation of light by a prism (see figure at . Repeat for Mystery A. Use the refractive Index found In Case B for calculating the percent Bor. 1. After opening the simulation, select "PRISM". Enter the results In Table E .From the bottom panel, select the Triangle (priam]. Set Reflections Of. Tum on Normal. 3. Select the Ervironment as Alr. Select Objects o: Glow. 4. Set the lover to ony arbitrary angle, pointing to the prism. Tum on the loser. The laser beam Figure should come out from the other side. 5. Use the protractor to measure the angle of Incidence & angle of retraction & angle of the prism A , and angle of Deviation S, and record them In Table G. or 8. Calculate the angle of deviation by using equation (4teed compare with measured The the refractive Index of glois found In Core C. RESULTS TABLE D: TOTAL INTERNAL REFLECTION TABLE H: FOCAL LENGTH OF A CONVEX LENS all values are measured values unless mentioned. Attach of leos one Image of each case with your report. Angle of Angle of Oftical Angle Incidence at Retraction at Calculated Critical Anale No Maccured Measured | Calculated Focal Page 1 of 9 2553 words Text Predictions: On Accessibility: Investigate Focus + 50% 1 69"F 4:13 PM Q Search A Windy 12/8/2023