write the experimental procedure to
find out focal point of
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Explanation:
Procedure
- Move the screen towards or away from the lens until a sharp clear image is seen on it. Measure the image distance (v), between the lens and the screen.
- Substitute the values of u and v in the formula: vuf.
- 111. += and hence determine the focal.
- length (f) of the lens. u.
- v. Ray box.
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