CBSE Class 12 Physics 2022 Term 2 Outside Delhi Set 1 Solved Paper

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Question : 5
Total: 12
Briefly explain how emf is generated in a solar cell. Draw its I-V characteristics. 3
Solution:  
Process of emf generation in a solar cell:
(i) Light falls on the junction. Electron-hole pairs are generated.
(ii) The electron and hole move in opposite direction due to junction field. Electrons move towards n-side and holes move towards p-side of the junction.
(iii) The two sides of the junction become oppositely charged and a photo voltage is generated.
I-V characteristics of solar cell:
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