MCQ
Lines of force:
- AAre not imaginary lines.
- BCannot be mapped on paper.
- CDo not intersect each other.
- DAlways intersect each other.
✓
Answer
- Do not intersect each other.
Explanation:
lines of force do not intersect each other because at the point of intersection we will have two different direction of the force, as their will be two tangential direction corresponding to the two intersecting lines.
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
Statement A: With an increase in the frequency of AC supply inductive reactance increases.
Statement B: With an increase in the frequency of AC supply capacitive reactance increase.
Statement B: With an increase in the frequency of AC supply capacitive reactance increase.
Two charges of $+1 μ\text{C} +5 μ\text{C}$ are placed 4cm apart, the ratio of the force exerted by both charges on each other will be-
→When current in a coil changes to 2 ampere from 8 ampere in 3 
, the e.m.f. induced in the coil is 2 volt. The self inductance of the coil in millihenry is
|
(a) 1 |
(b) 5 |
(c) 20 |
(d) 10 |
Angular width (b) of central maximum of a diffraction pattern on a single slit does not depend upon
|
(a) Distance between slit and source |
(b) Wavelength of light used |
|
(c) Width of the slit |
(d) Frequency of light used |
Carbon, silicon and germanium have four valence electrons each. At room temperature the appropriate statement is:
Two capacitors each having capacitance C and breakdown voltage V are joined in series. The capacitance and the breakdown voltage of the combination will be:
Kirchhoff ’s first rule at a junction in an electrical network, deals with conservation of:
Current provided by a battery is maximum when
|
(a) Internal resistance equal to external resistance |
|
(b) Internal resistance is greater than external resistance |
|
(c) Internal resistance is less than external resistance |
|
(d) None of these |
The critical angle for a medium is 60°. The refractive index of the medium is
|
(a) |
(b) |
(c) |
(d) |
A parallel plate air capacitor is charged and then isolated. When a dielectric material is inserted between the plates of the capacitor, then which of the following does not change
|
(a) Electric field between the plates |
(b) Potential difference across the plates |
|
(c) Charge on the plates |
(d) Energy stored in the capacitor |