Question

A photographer wishes to photograph a 20m tall tree from a distance of 30m. He wishes to fill the 20mm size sensor array in his camera with the image. 1. What kind if lens must he use (concave/convex)? And what kind of image must be formed on the sensor (real/virtual)? Is the image upright or inverted? (3 Points)

2. Draw a clearly labeled ray -diagram showing image formation in this case. Label the principal axis, the focus, and the object and image distances. (8 Points

3. Calculate the focal length of the lens needed. Show all steps. [5 Points)

4. If he wishes to take a picture of the same tree from further away (and still fill the image sensor), he would need the distance between the lens and the sensor array. to (a) increase (b) decrease (c) not change Explain your answer using 1-3 Sentences.

Answer 1

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