MCQ
The factor by which the capacitance increases from its vacuum value when the dielectric is inserted fully between the plates of a capacitor, is called as:
- ADielectric.
- BDielectric constant of the substance.
- CPermittivity.
- DPermiability.
✓
Answer
- Dielectric constant of the substance.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
An equiconvex lens of glass of focal length 0.1 metre is cut along a plane perpendicular to principle axis into two equal parts. The ratio of focal length of new lenses formed is
|
(a) 1 : 1 |
(b) 1 : 2 |
(c) 2 : 1 |
(d) 2 : |
Which of the following rays has the maximum frequency
|
(a) Gamma rays |
(b) Blue light |
(c) Infrared rays |
(d) Ultraviolet rays |
When a bar magnet falls through a long hollow metal cylinder fixed with its axis vertical, the final acceleration of the magnet is
|
(a) Equal to zero |
|
(b) Less than g |
|
(c) Equal to g |
|
(d) Equal to g in to beginning and then more than g |
A power transformer is used to step up an alternating e.m.f. of 220 V to 11 kV to transmit 4.4 kW of power. If the primary coil has 1000 turns, what is the current rating of the secondary ? Assume 100% efficiency for the transformer
|
(a) 4 A |
(b) 0.4 A |
(c) 0.04 A |
(d) 0.2 A |
Two capacitors connected in parallel having the capacities 
and 
are given ‘q’ charge, which is distributed among them. The ratio of the charge on and will be
|
(a) |
(b) |
(c) |
(d) |
In Young's interference experiment, if the slits are of unequal width, then:
By properly combining two prisms made of different materials, it is possible to:
The binding energy of a nucleus is equivalent to:
64 identical drops each of capacity $5~\mu F$ combine to form a big drop. What will be the capacity of the big drop ?
→The conductivity of a metal decreases with the increase in temperature on account of: