Metallic (nonferromagnetic) and nonmetallic particles in a solid … - Vidyadip

Question

Metallic (nonferromagnetic) and nonmetallic particles in a solid waste may be separated as follows. The waste is allowed to slide down an incline over permanent magnets. The metallic particles slow down as compared to the norunetallic ones and hence are separated. Discuss the role of eddy currents in the process.

✓

Answer

As the metallic particle slide over permanent magnet they are attracted towards magnet due to formation of eddy current on the metallic body and thus they slow down and are separated from rest of material.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Magnetism And Matter→Magnetism And Matter — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Two stable isotopes of lithium $^6_3\text{Li }\text{ and }\ ^7_3\text{Li}$ have respective abundances of 7.5% and 92.5%. These isotopes have masses 6.01512 u and 7.01600 u, respectively. Find the atomic mass of lithium.

The capacitance of a parallel plate air capacitor is $8 \mu F$. The distance between its plates is halved and the space between the plates is filled with a medium having dielectric constant 5 . Find the capacitance of the capacitor in the second case.

Find the maximum wavelength of electromagnetic radiation which can create a hole-electron pair in germanium. The band gap in germanium is 0.65eV.

Two bulbs are rated $(P_1, V)$ and $(P_2, V)$. If they are connected in series in parallel across a supply V.
Find the power dissipated in the two combinations in terms of $P_1$ and $P_2$.

Which of the two persons shown in figure is more likely to fall down? Which external force is responsible for his falling down?

Can you ever have a situation in which a light ray goes undeviated through a prism?

Write applications of the resonance phenomenon in the $L - C - R$ series circuit.

If an electron has a wavelength, does it also have a colour?

Find the dimensions of:

Electric field E,
Magnetic field B and
Magnetic permeability $\mu_0.$

The relevant equations are$\text{F = qE, F = qvB,}$ and $\text{B}=\frac{\mu_0\text{I}}{2\pi\alpha};$
where F is force, q is charge, v is speed, I is current, and a is distance.

A projectile is fired from the top of a 40m high cliff with an initial speed of 50m/s at an unknown angle. Find its speed when it hits the ground.