- ABiot-Savart law.
- BCoulomb’s law
- CFaraday’s law.
- DKirchhoff’s law.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

The state of the energy gained by valance electrons when the temperature is raised or when electric field is applied is called as
|
(a) Valance band |
(b) Conduction band |
(c) Forbidden band |
(d) None of these |
Light of wavelength is 700 Å in air. It has a wavelength in glass (μ = 1.5) equal to
|
(a) 7200 Å |
(b) 4800 Å |
(c) 10800 Å |
(d) 7201.5 Å |
A galvanometer of 25 W resistance can read a maximum current of 6mA. It can be used as a voltmeter to measure a maximum of 6 V by connecting a resistance to the galvanometer. Identify the correct choice in the given answers
|
(a) 1025 W in series |
(b) 1025 W in parallel |
(c) 975 W in series |
(d) 975 W in parallel |
The time period of a thin bar magnet in earth’s magnetic field is T. If the magnet is cut into two equal parts perpendicular to its length, the time period of each part in the same field will be
|
(a) |
(b) T |
(c) |
(d) 2T |