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The minority carrier life time and diffusion constant in a semiconducting material are 100 μs and 100 cm2/s respectively. The diffusion length of carriers is

0.1 cm
0.01 cm
0.0141 cm
1 cm

Correct Answer: 0.1 cm

Explanation:

Diffusion length = sqrt(Carrier life time x Diffusion constant) = (100 x 10^-6 x 100)^0.5 = 0.1 cm.

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