Virtual+Lab+1

Welcome to Virtual Lab 1 (Term 1, wk 9)
 * Aim: ** To find the relationship between the focal length of a converging lens, the object distance and image distance.

Background study:
 * Setup: **

1. The above picture shows a screen shot of the applet that will be used for this practical. Activate the applet found at this website: []

2. Use the following settings for this practical: · Select “Principal rays” · Curvature radius = 0.6 m · Refractive index = 1.53 · Diameter = 1.3 m · Select “Virtual image” to show any virtual image if it is formed. · Select “Ruler” for measurement of lengths

1. Position the object at a distance greater than the focal length.

(a) Describe the image formed.

(b) What happens as the object is pulled further away from the focal length?

2. Position the object at a distance smaller than the focal length.

(a) Describe the image formed.

(b) What happens as the object is pulled closer to the lens?

3. Position the object at the principal focus of the lens. Where is the image formed?

Investigation:

1. Position the object at a distance, //u// greater than the focal length, //f// such that an image is formed. Note that //f// refers to the curvature radius of the lens that has been preset at 0.6 m. Measure and record //u//.

2. Measure and record //v//, the distance from the centre of the lens to the image.

3. Repeat steps 1 to 2 to obtain at least 6 readings for //u// and //v//.

4. using excel spreadsheet. All answers to other questions should be included in your spreadsheet.

**5.** Draw a suitable conclusion based on the value of and your recordings in the table.

6. Is your conclusion made in question 1 still valid for the formation of virtual images? Discuss, giving adequate evidence for your answer.

7. Using your data, use excel spreadsheet to show a graph such that the gradient is the f, the focal length. Show your graph in your spreadsheet.

Submit your excel spread sheet below. Remember to write your name beside the document.
[|PhysicsVirtualLab.xls] Brandon Ng Chin Jie 3O303 Yong Yu Wen 3O333

Chen Xie 3P303 Yu Zhuoxin 3P328

[|Virtual Lab 1 - Activity.xls] Arthur Chionh 3O308 Teo Jim Yang 3O326 [|Virtual Lab- Glenn Chua 3P3(05).xls]Glenn Chua Sun Bangjie 3O324 by Reynold tan by Leow S.T. Aloysius 3O315

[[file:lab Guan Ruofei 3P3 06.xls]]Guan Ruofei 3P306
Wecom Huang Hui Kang 3P324 Ong Beng Hwee 3O320 [|Virtual_Lab_Qns'_Ans.xls] Wong Kang Ming 3P325

Wong Yan Zhi 3P326 Isaac Lau Fei Heng 3o3 13 [|Virtual Lab 1.xls] Wang Po En 3o330