- AParallel
- BPerpendicular
- COpposite
- DAt an angle of $\theta$
Explanation:
Direction of wave is perpendicular to the wavefront.
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Equal charges are given to two spheres of different radii. The potential will
|
(a) Be more on the smaller sphere |
|
(b) Be more on the bigger sphere |
|
(c) Be equal on both the spheres |
|
(d) Depend on the nature of the materials of the spheres |
The direction of ray of light incident on a concave mirror is shown by PQ while directions in which the ray would travel after reflection is shown by four rays marked 1, 2, 3 and 4 (Fig). Which of the four rays correctly shows the direction of reflected ray?

Two condensers and
in a circuit are joined as shown in figure. The potential of point A is
and that of B is
. The potential of point D will be
|
(a) |
(b) |
(c) |
(d) |
Speed of recession of galaxy is proportional to it's distance
|
(a) Directly |
(b) Inversely |
(c) Exponentially |
(d) None of these |