Observation and Calculations

n Data : Table 1 Trial 61 (degrees) nglass 1 . 50 i 2 3 4 l • I . 5 .^ 20 ^ 0 0 I 60 5 62 (degrees) 30 0, 0 0 1 0 , (j H 0 IT 0 , 3G> 0 ,H2 0, 0 ^ 30 35 1.50 Sin 02 ^ Vo J Sin 0 i ^ 0.01 " 0 ,2 1 n2 G I , *) l 1 . DH t . 55 Observations and Calculations: 1 . Classify the bending of light as exhibited by the ray diagrams. According to your data, is light refracted away from or toward the normal as it passes at an angle into a medium with a higher index of refraction ? t-ouxvtlS #^ normal as H posses OJ fu out am*iii i A Vo o frutV \JJWV uoian ai d/ tiq- * u\di!y Calculate sin 0 for trial . Record the results in Table 1 . 1 refracted iS 2. ] and sin 02 each 3. Calculate n2 for each trial . Record the results in Table 1 . 4. Compare the values for index of refraction of glass for each trial ( values in last column ). Is there good agreement between them ? Would you conclude that index of refraction is a constant for a given medium? ' J ’i / i , TVKU art ( xqmmf . v a UHL . Q }® i O S IS y ' -i i 50 ' Hrwrtfof # OUTI. t rtdsx of i Hvactto i. mum 3 ClM 5. . OJ/DiUlCi ft H tiieclsawl . * Compare your calculated n with the given index of refraction, COW cull ! \ . Do they agree? Explain why ngiass 2 it does or doesn’t. incijLK of refrain on WM acptc txtcuuic W : Jattci r Si di- >c calLCU Jk> f CLt a s s B :\ s i . 60 , cuid oil l * bO . Procedure: Part B Semp Ol f tfradi on are aroiuvJ Ufa , 1 . Reset simulation and choose “Mysteiy A” if you are at an even lab station or choose “Mystery B” if you are at an odd lab station . 2. Choose the protractor and set the laser to an angle of incidence, 0i , at 30°. 3. Ignore the reflected ray (the ray that remains in air). Using the protractor, measure the angle of refraction, 0 2, of the laser and record in Table 2. 4 . Repeat steps 2 and 3 for angles of incidences of 50° and 70° of your own choosing. Record the results in Table 2 . 5 . Calculate sin 0 i and sin 02 for each trial . Record the results in Table 2. Table 2 Trial l 2 3 4 5 8 i (degrees) 30 40 50 60 70 02 (degrees) 0-0 3? HI Sin 0i 0.50 0 ' CH 5 O < ~Kg (o O . u (c 6 . HHO Sin 02 n , -wn o jjM O . 530 O , U (V L O < Co 5 (-p S ^ i u-i ~ s \opc 6. Draw a graph of the Sin 0 i vs. Sin 02 on the grid below. Draw in your best-fit line and find the slope. Show slope work below 1.0 . °iM H CD C Q 3MW ( points oh-oSC-'H, over tvvwe ->) ( f . 5 j 2J * m * ll (s ! *5 ‘ S ' 5 C/) 67 , ( G ' 5 cl ) ' i 7. What does your slope represent? r Tnt slope i tottflUK ft % CUfxi 1 1.0 . sin02 O 'b SinQ\ S i A 0^ & 0 iS M U QycipH t ^ 8. Using the chart below or various indices of refraction for various media, identify your mystery material you had in your experiment. foi&r-Hq. Media Index of Refraction for various media +o mu Index of Refraction 1.00 1.0003 1.000S 1.31 1.33 Vacuum Air Carbon dioxide gas Ice Pure water > Ethyl alcohol s 1 afi.con.oi , t o c t a u&t 4m v a i 1.36 1.46 Quartz 1.52 1.77 1.92 Olwrw- i 1.47 1.48 Acrylic 1.49 1.51 Glass Sapphire Zircon Cubic zirconla ^- incte of refratitaa ; $ * u| j a n d %n l ildin CH ro raw Mi Vegetable oil Olive oil Table salt Mum ) Diamond 2.16 2.42 Gallium phosphide 3.50 , £ tOlfUCJk is HW \ AOKit* ( 9. F i n d the percent error of your observed value (slope) using the identified index of refraction as your accepted value. % Error = measured - accepted xlOO accepted \ •} l ft& fc ft S ~\ •i -I I,H % error - Analysis Questions: 0 S\ / (i 3 (P , 34 x 100 1 . Substitute the average value of the index of refraction that you measured in Part A into the equation for index of refraction and calculate the speed of light in the glass. Show work. ( 3 ) M - 2 OO x / 0 8 vy IT '' t v jf $ C = 3 c0 x / 0 tri s oQx / (] . ' V= 7 : * t .6 0 ' ' . I / / ~ ,TI / J V a - 1 . *5 0 2 . What if you conducted this experiment (Part A) under water? Compare and contrast the results you get in such a situation to the results you have from this lab. ctlru d i f f ;f /l U-VI&IJ sTlfil if e oo vaster , ms conducted qvum wu bctwe.cn wt momim refrain oft u > ouu\ d & Jto diAfetu \ n qm \ Adtv-cs o{ rtfrothofl tetoictn at umwMfit. drvutre uooujel kt less tecritUv'tei TYO ?> qVvcjuvi s n tot A. j