- ADielectric.
- BDielectric constant of the substance.
- CPermittivity.
- DPermiability.
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The capacity and the energy stored in a parallel plate condenser with air between its plates are respectively
and
. If the air is replaced by glass (dielectric constant = 5) between the plates, the capacity of the plates and the energy stored in it will respectively be
|
(a) |
(b) |
(c) |
(d) |
A person is suffering from the defect astigmatism. Its main reason is
|
(a) Distance of the eye lens from retina is increased |
|
(b) Distance of the eye lens from retina is decreased |
|
(c) The cornea is not spherical |
|
(d) Power of accommodation of the eye is decreased |
For goldplating on a copper chain, the substance required in the form of solution is
|
(a) Copper sulphate |
(b) Copper chloride |
|
(c) Potassium cyanide |
(d) Potassium aurocyanide |