Download App

Magnetism And Matter — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsMagnetism And Matter1 Mark
MCQ
Which of the following is another term for magnetization?
  • A
    Magnetic neutrality.
  • B
    Magnetic polarization.
  • C
    Magnetic power.
  • D
    Magnetic moment.
✓

Answer

  1. Magnetic polarization.

Explanation:

Magnetization is also termed as magnetic polarization. Magnetic polarization is basically a balance between the magnetic flux density in a space which is devoid of matter and the magnetic flux density in a space with matter, i.e. in a 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 "M.C.Q [1M]" from Magnetism And Matter→Magnetism And Matter — all question types→Physics STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

When is the effective capacitance of a capacitor increased?
→
A coil of area 80cm2 and number of turns 50 is rotating about an axis perpendicular to a magnetic field of 0.05 Tesla at 2000 rotations per minute. The maximum value of emf induced in it will be.
→

If a proton is projected in a direction perpendicular to a uniform magnetic field with velocity v and an electron is projected along the lines of force, what will happen to proton and electron

(a) The electron will travel along a circle with constant speed and the proton will move along a straight line

(b) Proton will move in a circle with constant speed and there will be no effect on the motion of electron

(c) There will not be any effect on the motion of electron and proton

(d) The electron and proton both will follow the path of a parabola
→

A horizontal straight conductor kept in north-south direction falls under gravity, then

(a) A current will be induced from South to North

(b) A current will be induced from North to South

(c) No induce e.m.f. along the length of conductor

(d) An induced e.m.f. is generated along the length of conductor
→

Assertion :   The tangent galvanometer can be made more sensitive by increasing the number of turns of its coil.

Reason    : Current through galvanometer is proportional to the number of turns of coil.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.
→
In Einstein’s picture of Photoelectric emission, the photoelectric emission does not take place by:
→
Pick the correct options:
  1. Magnetic field is produced by electric charges only.
  2. Magnetic poles are only mathematical assumptions having no real existence.
  3. A north pole is equivalent to a clockwise current and a south pole is equivalent to an anticlockwise current.
  4. A bar magnet is equivalent to a long, straight current.
→

The time period of a freely suspended magnet is 2 sec. If it is broken in length into two equal parts and one part is suspended in the same way, then its time period will be

(a) 4 sec

 (b) 2 sec

 (c)  

 (d)  1 sec
→
Suppose all the surfaces in the previous problem are rough. The direction of friction on B due to A:
  1. Is upward.
  2. Is downward.
  3. Is zero.
  4. Depends on the masses of A and B.
→
Water enters through end A with a speed v1 and leaves through end B with a speed v2 of a cylindrical tube AB. The tube is always completely filled with water. In case I the tube is horizontal, in case II it is vertical with the end A upward and in case III it is vertical with the end B upward. We have v1 = v2 for
  1. Case I.
  2. Case II.
  3. Case III.
  4. Each case.
→