Question
A hole in a P-type semiconductor is
| (a) An excess electron | (b) A missing electron |
|
(c) A missing atom |
(d) A donor level |
A hole in a P-type semiconductor is
| (a) An excess electron | (b) A missing electron |
|
(c) A missing atom |
(d) A donor level |
(b) A missing electron
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When cells are connected in parallel, then
|
(a) The current decreases |
(b) The current increases |
|
(c) The e.m.f. increases |
(d) The e.m.f. decreases |
A person is in a room whose ceiling and two adjacent walls are mirrors. How many images are formed
| (a) 5 | (b) 6 | (c) 7 | (d) 8 |
A total charge Q is broken in two parts
and
and they are placed at a distance R from each other. The maximum force of repulsion between them will occur, when
|
(a) |
(b) |
|
(c) |
(d) |