- AVolt
- BVolt per metre
- CVolt metre
- DNone of these
Explanation:
E.m.f of a cell is defined as the maximum potential difference across the cell when no current flows through the circuit.
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Least doped region in a transistor
|
(a) Either emitter or collector |
(b) Base |
(c) Emitter |
(d) Collector |
Electric field at a point varies as
for
|
(a) An electric dipole |
(b) A point charge |
|
(c) A plane infinite sheet of charge |
(d) A line charge of infinite length |
A helium nucleus makes a full rotation in a circle of radius 0.8 metre in two seconds. The value of the magnetic field B at the centre of the circle will be
|
(a) |
(b) |
(c) 2 |
(d) |
Newton postulated his corpuscular theory on the basis of
|
(a) Newton’s rings |
(b) Colours of thin films |
|
(c) Rectilinear propagation of light |
(d) Dispersion of white light |
If the light moving in a straight line bends by a small but fixed angle, it may be a case of:
The half life period of a radioactive element X is same as the mean life time of another radioactive element Y. Initially both of them have the same number of atoms. Then
|
(a) X and Y have the same decay rate initially |
|
(b) X and Y decay at the same rate always |
|
(c) Y will decay at a faster rate than X |
|
(d) X will decay at a faster rate than Y |
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 |