railway RRB JE (CBT I + CBT II) Mock Test 2024 Electronic Devices Semiconductors

একটি বিশুদ্ধ পরিবাহী মধ্যে নিষিদ্ধ শক্তি ব্যবধান কত?

1
1.1 eV
2
0.7 eV
3
6 eV
4
0 eV
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