CBSE Class 12 Physics Chapter-5 Important Questions – Free PDF Download
Free PDF download of Important Questions with Answers for CBSE Class 12 Physics Chapter 5 – Magnetism And Matter 1 Mark Questions prepared by expert Physics teachers from latest edition of CBSE(NCERT) books only by CoolGyan to score more marks in CBSE board examination.
CBSE Class 12 Physics Chapter-5 Important Questions
CBSE Class 12 Physics Important Questions Chapter 5 – Magnetism And Matter
1 Mark Questions
1. How does the intensity of magnetization of a paramagnetic material vary with increasing applied magnetic field?
Ans. Intensity of magnetization increases with the increase in applied magnetic field.
2. An iron bar magnet is heated to 
and then cooled in a magnetic field free space. Will it retain magnetism?
Ans. Curie temperature of iron is about 
but when it is heated to a very higher temperature magnetism of iron further gets lost and it will not retain
magnetism.
3. How will the magnetic field intensity at the centre of a circular wire carrying current change, if the current through the wire is doubled and radius of the coil is halved?
Ans. Since B = 
B’= 4B
4. Can neutrons be accelerated in a cyclotron? Why?
Ans. No, neutrons cannot be accelerated in a cyclotron because neutron is neutral and cyclotron can accelerate only charged particles.
5. What type of magnetic material is used in making permanent magnets?
Ans.Material having high coercivity is used in making permanent magnets.
6. Which physical quantity has the unit
? Is it a scalar or a vector quantity?
Ans. Magnetic field. It is a vector quantity.