Question: Please answer in 30 mins please (e) In a lab, a protecting layer is needed on a casing of a device to shield the incident
Please answer in 30 mins please

(e) In a lab, a protecting layer is needed on a casing of a device to shield the incident radiation. A coating material has a reflectivity of 0.15 and an absorption coefficient (a) of 100 cm Design a shield coating layer that will permit only 0.5% of the incident radiation to be transmitted through the coating Dalam makmal, satu lapisan pelindung diperlukan pada selongsong peranti untuk melindungi sinuran tuju. Satu bahan salutar mempunyai daya pemantulan 0.15 dan pekali serapan (a) 100 cm Rekabentuk satu lapisan saluran perisai yang akan membenarkan hanya 0.5% sinaran kejadian dihantar melalui salutan tersebut (4 Marks/ Markah)
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