Electro-magnetic spectrum range, which is important for radiation varies from _____________ microns?
Correct answer: B. 0.5 to 50
- A. 1 to 100
- B. 0.5 to 50
- C. 10 to 100
- D. 100 to 1000
Explanation
Most engineering heat-transfer radiation lies roughly within the infrared region, commonly taken as about 0.5 to 50 micrometres for this type of question. The other ranges omit a substantial part of the important thermal-radiation band.
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