Which of these is unipolar transistor
|
(a) Point contact transistor |
(b) Field effect transistor |
| (c) PNP transistor | (d) None of these |
Which of these is unipolar transistor
|
(a) Point contact transistor |
(b) Field effect transistor |
| (c) PNP transistor | (d) None of these |
(b) Field effect transistor
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and
are the electrical conductivities of Ge and Na respectively. If these substances are heated, then
|
(a) Both |
(b) |
|
(c) |
(d) Both |
An object is placed at a distance u from a simple microscope of focal length f. The angular magnification obtained depends:
The image of point P when viewed from top of the slabs will be
|
(a) 2.0 cm above P |
(b) 1.5 cm above P |
(c) 2.0 cm below P |
(d) 1 cm above P |
The first member of the Paschen series in hydrogen spectrum is of wavelength 18,800 Å. The short wavelengths limit of Paschen series is
|
(a) 1215 Å |
(b) 6560 Å |
(c) 8225 Å |
(d) 12850 Å |
E denotes electric field in a uniform conductor, I corresponding current through it, drift velocity of electrons and P denotes thermal power produced in the conductor, then which of the following graph is incorrect
|
(a) |
(b) |
(c) |
(d) |