A light of intensity I0 passes through a material of thickness d.
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A light of intensity I0 passes through a material of thickness d. The resultant intensity is
(a) I = I0 e-dλ
(b) I = I0(I-e-dλ)
(c) I = I0 e-dλ
(d) I = I0(I-e-d/λ)
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