the intensity of light

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A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away from the les on the other side on its principal axis, the intensity of light
17
Nov
A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away from the les on the other side on its principal axis, the intensity of light A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away [...]
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