Question
Can we have a single north pole? A single south pole?
✓
Answer
No we cannot have single pole magnet.
A magnet always has two poles.
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
If a thin lens is dipped in water, does its focal length change?
Is it always true that the molecules of a dense liquid are heavier than the molecules of a lighter liquid?
The threshold wavelength of a metal is $\lambda_0.$ Light of wavelength slightly less $\tan \lambda_0.$ is incident on an insulated plate made of this metal. It is found that photoelectrons are emitted for some time and after that the emission stops. Explain.
→Identify the type of waves which are produced by the following way and write one application for each:
- Radioactive decay of the nucleus.
- Rapid acceleration and decelerations of electrons in aerials.
- Bombarding a metal target by high energy electrons.
If a point charge is rotated in an arc of radius r around a charge q, what will be the work done? Explain.
A source emits 45 joules of energy in 15s. What is the radiant flux of the source?
A straight horizontal conducting rod of length 0.45 m and mass 60 g is suspended by two vertical wires at its ends. A current of 5.0 A is set up in the rod through the wires.
- What magnetic field should be set up normal to the conductor in order that the tension in the wires is zero?
- What will be the total tension in the wires if the direction of current is reversed keeping the magnetic field same as before? (Ignore the mass of the wires.) g = 9.8 m s–2.
Which electromagnetic waves are produced by the Hertz experiment and what is the range of their wavelength?
Define the term “threshold frequency”, in the context of photoelectric emission.
How would the angular separation of interference fringes in Young’s double slit experiment change when the distance between the slits and screen is doubled?