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Q.

The energy gap of silicon is  1.14 eV. The maximum wavelength at which silicon will begin absorbing energy is

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a

10888 Ao

b

1088.8 Ao

c

108.88 Ao

d

10.888 Ao

answer is A.

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Detailed Solution

λmax=hcE= 6.6 x 10-34 x 3 x 1081.14 X 1.6 X 10-19 = 10888Ao

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