A gold ring (k = 65 W/m K) measuring 15 * 10 * 60 cm is exposed to a s – McqOptions

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1.	A gold ring (k = 65 W/m K) measuring 15 * 10 * 60 cm is exposed to a surface where h = 11.5 W/m² K. Find the value of biot number
A.	0.68
B.	0.58
C.	0.48
D.	0.38
Answer» D. 0.38

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