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| | <!-- 4. What should be the minimum distance of light source from the lens when testing for focal length? --> | | <!-- 4. What should be the minimum distance of light source from the lens when testing for focal length? --> |
| | [[Image:Lens calc.png|thumb|450px|Measuring the focal point]] | | [[Image:Lens calc.png|thumb|450px|Measuring the focal point]] |
| − | It depends on how accurately you want to measure the focal length. The focal length can be determined by the equation: | + | It depends on how accurately you want to measure the focal length. The focal length can be determined by the equation: |
Latest revision as of 21:42, 24 April 2021
Measuring the focal point
It depends on how accurately you want to measure the focal length. The focal length can be determined by the equation: