MCQ
The lead marked with the arrow is the _______.


- Acollector
- Bbase
- Cemitter
- Dcore

Explanation:
It is a p-n-p, transistor. The Lead marked with the arrow is the emitter. It tells the direction of the flow of the holes i.e, the flow of conventional current.

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The condition for observing Fraunhofer diffraction from a single slit is that the light wavefront incident on the slit should be
|
(a) Spherical |
(b) Cylindrical |
(c) Plane |
(d) Elliptical |
If particles are moving with same velocity, then maximum de-Broglie wavelength will be for
|
(a) Neutron |
(b) Proton |
(c) b-particle |
(d) α - particle |