- AEqual-potential surface
- BSame potential surface
- CEqui-magnitude surface
- DEquipotential surface
Explanation:
Equipotential surface is a surface formed by the locus of all the points which are at the same potential. Equipotential surfaces do not intersect with each other and are closely spaced in the region of strong electric fields and vice-versa.
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The nature of binding for a crystal with alternate and evenly spaced positive and negative ions is
|
(a) Covalent |
(b) Metallic |
(c) Dipolar |
(d) Ionic |
In Fresnel diffraction, if the distance between the disc and the screen is decreased, the intensity of central bright spot will
|
(a) Increase |
(b) Decrease |
(c) Remain constant |
(d) None of these |
In the given circuit if point C is connected to the earth and a potential of +2000 V is given to the point A, the potential at B is
|
(a) 1500 V |
(b) 1000 V |
(c) 500 V |
(d) 400 V |
Potential gradient is defined as
|
(a) Fall of potential per unit length of the wire |
|
(b) Fall of potential per unit area of the wire |
|
(b) Fall of potential per unit area of the wire |
|
(d) Potential at any one end of the wire |
In an electroplating experiment, m gm of silver is deposited when 4 ampere of current flows for 2 minute. The amount (in gm) of silver deposited by 6 ampere of current for 40 second will be
|
(a) 4 m |
(b) m/2 |
(c) m/4 |
(d) 2 m |
Focal length of a convex lens will be maximum for
|
(a) Blue light |
(b) Yellow light |
(c) Green light |
(d) Red light |
Assertion : Dielectric breakdown occurs under the influence of an intense light beam.
Reason : Electromagnetic radiations exert pressure.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |