Wavefront of a wave has direction with wave motion
|
(a) Parallel |
(b) Perpendicular |
(c) Opposite |
(d) At an angle of π |
Wavefront of a wave has direction with wave motion
|
(a) Parallel |
(b) Perpendicular |
(c) Opposite |
(d) At an angle of π |
(b) Perpendicular
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How much water should be filled in a container 21 cm in height, so that it appears half filled when viewed from the top of the container (given that a = 4/3)
|
(a) 8.0 cm |
(b) 10.5 cm |
(c) 12.0 cm |
(d) None of the above |
Two equal point charges are fixed at x = -a and x = +a on the x-axis. Another point charge Q is placed at the origin. The Change in the electrical potential energy of Q, when it is displaced by a small distance x along the x-axis, is approximately proportional to
|
(a) x |
(b) |
(c) |
(d) 1/x |
In case of linearly polarized light, the magnitude of the electric field vector :
|
(a) Does not change with time |
|
(b) Varies periodically with time |
|
(c) Increases and decreases linearly with time |
|
(d) Is parallel to the direction of propagation |
In an experiment, a graph was plotted of the potential difference V between the terminals of a cell against the circuit current i by varying load rheostat. Internal conductance of the cell is given by
|
(a) xy |
(b) |
(c) |
(d) (x – y) |
$\alpha<\beta$
$\alpha<\beta \text{ if}\text{ A}<\text{B}$
$\alpha<\beta \text{ if}\text{ A}>\text{B}$
$\alpha<\beta \text{ if}\text{ A}=\text{B}$

Two condensers of capacity 0.3 μF and 0.6 μF respectively are connected in series. The combination is connected across a potential of 6 volts . The ratio of energies stored by the condensers will be
|
(a) |
(b) 2 |
(c) |
(d) 4 |