- AHoles in P-region only.
- BFree electrons in N-region only.
- CMajority carriers in both regions.
- DMajority as well as minority carriers in both regions.
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Which of the following is the fusion reaction
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(a) |
(b) |
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(c) |
(d) |
A biconvex lens forms a real image of an object placed perpendicular to its principal axis. Suppose the radii of curvature of the lens tend to infinity. Then the image would
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(a) Disappear |
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(b) Remain as real image still |
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(c) Be virtual and of the same size as the object |
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(d) Suffer from aberrations |
When a beam of light is used to determine the position of an object, the maximum accuracy is achieved if the light is
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(a) Polarised |
(b) Of longer wavelength |
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(c) Of shorter wavelength |
(d) Of high intensity |
The electric potential V at any point O (x, y, z all in metres) in space is given by . The electric field at the point (1m,0, 2m) in volt/metre is
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(a) 8 along negative X - axis |
(b) 8 along positive X - axis |
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(c) 16 along negative X - axis |
(d) 16 along positive Z - axis |