- AIsentropic
- BEquipotential
- CPolar
- DNon-polar
Explanation:
A molecule in which the centre of mass of positive and negative charges does not collide with each other is called a polar molecule. They have a permanent dipole moment. They have unsymmetrical shapes.
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A charge q is located at the centre of a cube. The electric flux through any face is
|
(a) |
(b) |
(c) |
(d) |
The correct relation is (Where
Horizontal component of earth's magnetic field;
= Vertical component of earth's magnetic field and B = Total intensity of earth's magnetic field)
|
(a) B = |
(b) |
(c) |B| = |
(d) |
The capacitance of an air filled parallel plate capacitor is 10μμF . The separation between the plates is doubled and the space between the plates is then filled with wax giving the capacitance a new value of 40. The dielectric constant of wax is
|
(a) 12.0 |
(b) 10.0 |
(c) 8.0 |
(d) 4.2 |
A short magnetic needle is pivoted in a uniform magnetic field of strength 1 T. When another magnetic field of strength
is applied to the needle in a perpendicular direction, the needle deflects through an angle q, where q is
|
(a) 30o |
(b) 45o |
(c) 90o | (d) 60o |
Refractive index for a material for infrared light is
|
(a) Equal to that of ultraviolet light |
|
(b) Less than for ultraviolet light |
|
(c) Equal to that for red colour of light |
|
(d) Greater than that for ultraviolet light |