Two infinite plane parallel sheets separated by a distance d have equal and opposite uniform charge densities σ. Electric field at a point between the sheets is
|
(a) Zero |
(b) |
|
(c) |
(d) Depends upon the location of the point |
(b) 
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The graph that correctly represents the relation of frequency n of a particular characteristic X-ray with the atomic number Z of the material is
|
(a)
|
(b)
|
(c)
|
(d)
|
Electric power is transmitted over long distances through conducting wires at high voltage because
|
(a) High voltage travels faster |
|
(b) Power loss is large |
|
(c) Power loss is less |
|
(d) Generator produced electrical energy at a very high voltage |
$\frac{\text{L}}{\text{T}}$
$\frac{\text{T}}{\text{L}}$
$\frac{\text{L}^2}{\text{T}^2}$
$\frac{\text{T}^2}{\text{L}^2}$
A charge of 40 μC is given to a capacitor having capacitance C = 10 μF. The stored energy in ergs is
|
(a) 80 |
(b) 800 |
(c) 80 |
(d) 8000 |
An AM wave has 1800 watt of total power content, For 100% modulation the carrier should have power content equal to
|
(a) 1000 watt |
(b) 1200 watt |
(c) 1500 watt |
(d) 1600 watt |
In a wave, the path difference corresponding to a phase difference of f is
|
(a) |
(b) |
(c) |
(d) |
