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the focal length of a concave mirror, a student focusses a classroomQt27. To determinewindow, a distant tree and the sun on the screen with the help of a concavecasĂŠ will the student get more accurate value of focal length ? Give reason for your cmirror. In which |
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Answer» D ) all these ok. The distance of the window should be considerably large compared to the focal length of the mirror. Other wise: a distant tree and sun should be used |
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