Question: In the thin - lens formula proof, the principle ray leaving O ' along the central axis is: Incident through the focal point and refracts
In the thinlens formula proof, the principle ray leaving along the central axis is:
Incident through the focal point and refracts parallel to the axis.
Not refracted upon entering or leaving the lens
Incident parallel to the axis and refracts through the focal point.
Not refracted upon entering the lens, but refracted exiting the lens.
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