Where must an object be placed in front of a convex lens of focal length 20cm toobtain a real and four times magnified image? Where will the image be formed?
Question
Solution 1
To solve this problem, we need to use the lens formula and magnification formula.
- Lens formula: 1/f = 1/v - 1/u
- Magnification formula: m = -v/u
Given:
- Focal length (f) = 20 cm
- Magnification (m) = -4 (It's negative because the image is real and inverted)
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