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CSE · Paper I · Waves & Opticscse-2024-subject-02-007

Laser light (Question 1 (10 Marks)) — UPSC Physics Optional CSE 2024 Paper I

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Consider a 10\text{ mW} laser beam passing through a 50\text{ km} fiber link of attenuation 0.5\text{ dB/km}. Calculate the power of the laser at the end of the link.

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