Question
For which position of the object does a convex lens form a virtual and erect image? Explain with the help of a ray diagram.
✓
Answer
Such an image is formed when the object lies between the optical centre and the principal focus. Consider two rays one moving parallel to the principal axis and the other passing through the optical centre. After refraction the two rays seem to meet on the same side as that of the object. Thus, the image lies on the same side as that of the object. The image is virtual, erect and magnified. The ray diagram is as shown.
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A charitable society of your city has organised a campaign in your neighbourhood in order to create awareness about this fact.
If you are asked to participate in this mission how would you contribute in this noble cause?
1. State the objective of organising such campaigns.
2. List two arguments which you would give to motivate the people to donate their eyes after death.
3. List two values which are developed in the persons who actively participate and contribute in such programme.