The ratio of electron and hole current in a semiconductor is 7/4 and the ratio of drift velocities of electrons and holes is 5/4, then ratio of concentrations of electrons and holes will be |
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a) |
5/7 |
b) |
7/5 |
c) |
25/49 |
d) |
49/75 |

The ratio of electron and hole current in a semiconductor is 7/4 and the ratio of drift velocities of electrons and holes is 5/4, then ratio of concentrations of electrons and holes will be |
|||||||

a) |
5/7 |
b) |
7/5 |
c) |
25/49 |
d) |
49/75 |

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