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(D) When a parallel beam of light is incident on a converging lens,it converges at the focal point of the lens. As we move away from the lens along th

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first increases and then decreases

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(D) When a parallel beam of light is incident on a converging lens,it converges at the focal point of the lens. As we move away from the lens along the principal axis,the beam first converges towards the focal point,causing the cross-sectional area of the beam to decrease,which leads to an increase in the intensity of light. After passing through the focal point,the beam begins to diverge,causing the cross-sectional area to increase,which leads to a decrease in the intensity of light. Therefore,the intensity of light first increases and then decreases.

$A$ parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away from the lens on the other side along the principal axis,the intensity of light

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