In the grease spot photometer, a lamp with dirty chimney is found to balance an electric lamp of constant illuminating power at a distance of `0.1` m

In the grease spot photometer, a lamp with dirty chimney is found to balance an electric lamp of constant illuminating power at a distance of `0.1` m from the spot. When the chimney is cleaned, the electric lamp has to be shifted by 2 cm to obtain a balance. Calculate the precentage of light absorbed by the dirty chimney

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Correct Answer - 0.36

5 views Answered 2023-02-05 15:29

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