The mutual characteristic of triode is
(a)
|
(a)
|
(c)
|
(d)
|
The mutual characteristic of triode is
(a)
|
(a)
|
(c)
|
(d)
|

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A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is
and the fish is 12 cm below the surface, the radius of this circle in cm is
|
(a) 36 |
(b) 4 |
(c) 36 |
(d) 36/ |
A diminished virtual image can be formed only in
|
(a) Plane mirror |
(b) A concave mirror |
|
(c) A convex mirror |
(d) Concave-parabolic mirror |

A galvanometer of 10 ohm resistance gives full scale deflection with 0.01 ampere of current. It is to be converted into an ammeter for measuring 10 ampere current. The value of shunt resistance required will be
|
(a) |
(b) 0.1 ohm |
(c) 0.5 ohm |
(d) 1.0 ohm |
At a place, the magnitudes of the horizontal component and total intensity of the magnetic field of the earth are 0.3 and 0.6 Oersted respectively. The value of the angle of dip at this place will be
| (a) 60° | (b) 45° | (c) 30° | (d) 0° |
The dominant mechanisms for motion of charge carriers in forward and reverse biased silicon P-N junctions are
|
(a) Drift in forward bias, diffusion in reverse bias |
|
(b) Diffusion in forward bias, drift in reverse bias |
|
(c) Diffusion in both forward and reverse bias |
|
(d) Drift in both forward and reverse bias |
The energy of a charged capacitor resides in
|
(a) The electric field only
|
(b) The magnetic field only |
|
(d) Neither in electric nor magnetic field |
(d) Neither in electric nor magnetic field |
P-type semiconductor is formed when
A. As impurity is mixed in Si B. Al impurity is mixed in Si
C. B impurity is mixed in Ge D. P impurity is mixed in Ge
|
(a) A and C |
(b) A and D |
(c) B and C |
(d) B and D |