Question
In an electromagnetic wave, the electric and magnetising fields are 100 and
The maximum energy flow is
|
(a) |
(b) |
(c) |
(d) |
In an electromagnetic wave, the electric and magnetising fields are 100 and
The maximum energy flow is
|
(a) |
(b) |
(c) |
(d) |
(a)
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When a point source of light is at a distance of one metre from a photo cell, the cut off voltage is found to be V. If the same source is placed at 2 m distance from photo cell, the cut off voltage will be
|
(a) V |
(b) V/2 |
(c) V/4 |
(d) V/ |
In the shown arrangement of the experiment of the meter bridge if AC corresponding to null deflection of galvanometer is x, what would be its value if the radius of the wire AB is doubled
|
(a) x |
(b) x/4 |
(c) 4x |
(d) 2x |
