Question:
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 of the 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 from the lens on the other side of the principal axis, the intensity of light
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Intensity is maximum at the focal point where light is most concentrated.
Updated On: Apr 10, 2026
- first decreases and then increases
- continuously increases
- continuously decreases
- first increases and then decreases
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The Correct Option is D
Solution and Explanation
Step 1: Convergence
A converging lens focuses parallel rays at its focal point.
Step 2: Intensity Change
As you move toward the focal point, the light rays concentrate, so intensity increases.
Step 3: Divergence
After passing the focal point, the rays begin to diverge, causing the intensity to decrease.
Final Answer: (d)
A converging lens focuses parallel rays at its focal point.
Step 2: Intensity Change
As you move toward the focal point, the light rays concentrate, so intensity increases.
Step 3: Divergence
After passing the focal point, the rays begin to diverge, causing the intensity to decrease.
Final Answer: (d)
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