1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

Three photodiodes $$D_1, D_2$$ and $$D_3$$ are made of semiconductors having band gaps of $$2.5 \mathrm{~eV}, 2 \mathrm{~eV}$$ and $$3 \mathrm{~eV}$$, respectively. Which one will be able to detect light of wavelength $$600 \mathrm{~nm}$$ ?

A
$$D_1$$ only
B
Both $$D_1$$ and $$D_3$$
C
$$D_2$$ only
D
All of these
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