When an electron jumps from the valence shell to the conduction band, it leaves behind a vacancy called a 'hole'. This phenomenon leads to the formation of an electron-hole pair, crucial in semiconductor physics. The correct answer is (b) electron - hole pair. ;
When an electron moves from the valence shell to the conduction band, it leaves behind a 'hole'. This creates an electron-hole pair, and the correct answer is (b) electron - hole pair.
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