Practical skills

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Question 6
Medium

The diagram below shows the circular cross-sections of two laser beams, Beam A and Beam B, incident on a sensor screen.

Laser beam cross-sections

What is the ratio of the cross-sectional area of Laser Beam B compared to the cross-sectional area of Laser Beam A?

5:25 : 25:2

25:425 : 425:4

2:52 : 52:5

4:254 : 254:25

Practical skills Questions

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