Determine CW operating lifetime for LED with ‚âà√≠‚Äö√¢ – McqOptions

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1.	Determine CW operating lifetime for LED with ‚âà√≠‚Äö√¢¬ßrt = -0.58 and degradation rate ‚âà√≠‚Äö√¢¬ßr= 7.86*10^-11 h^-1.$
A.	32.12
B.	42
C.	22.72
D.	23.223
Answer» D. 23.223

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