MHT CET 2025 Physics question

Not in JEE Advanced syllabus

The material used for solar cell should have band gap

(A)equal to zero
(B)less than 1.0 eV (non-zero)
(C)more than 1.8 eV
(D)between 1.0 eV and 1.8 eVCorrect

Answer: (D)

Solution

A solar cell must absorb a large part of the solar spectrum, whose photon energies are about 1.0 eV to 1.8 eV in the useful range, and it must generate electron-hole pairs. If the band gap were zero (A) the material would be a conductor and no junction could be formed; if it were less

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Question ID VK-103086