Imagine you have a biconvex lens with a focal length of several feet. You hold t

Question

Imagine you have a biconvex lens with a focal length of several feet. You hold the biconvex lens to your eye as a friend approaches you from very far away. Which of the following is the likeliest description of how the image you see of your friend changes? the image grows larger while inverted, briefly disappears, then grows larger while upright the image steadily grows smaller while remaining upright, the image steadily grows larger while remaining upright. the image grows larger while inverted, briefly disappears, then grows smaller while upright the image steadily grows larger while remaining inverted, the image steadily grows smaller while remaining inverted.

Explanation / Answer

The image grows larger while inverted ,briefly disappears ,the grows larger while upright. This is because of the following different cases associated with biconvex images
Case 1: the object is located beyond the 2F pointCase 2: the object is located at the 2F pointCase 3: the object is located between the 2F point and the focal point (F)Case 4: the object is located at the focal point (F)Case 5: the object is located in front of the focal point (F)

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