Class 12 CBSE Physics Magnetism & Matter Boards Questions
Here we provide Class 12 physics important notes,board questions and predicted questions with Answers for chapter Magnetism & Matter. These important notes,board questions and predicted questions are based on CBSE board curriculum and correspond to the most recent Class 12 physics syllabus. By practising these Class 12 materials, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 12 Board examinations.
2017
Q1
Write two properties of a material suitable for making (a) a permanent magnet, and (b) an
electromagnet.
solutions
solutions
2018
Q2
(a) An iron ring of relative permeability μr has winding’s of insulated copper wire of n turns per
meter. When the current in the winding’s is I, find the expression for the magnetic field in the
ring.
(b) The susceptibility of a magnetic material is 0.9853. Identify the type of magnetic material. Draw the modification of the field pattern on keeping a piece of this material in a uniform magnetic field.
solutions
(b) The susceptibility of a magnetic material is 0.9853. Identify the type of magnetic material. Draw the modification of the field pattern on keeping a piece of this material in a uniform magnetic field.
solutions
Q3
An aeroplane is flying horizontally from west to east with a velocity of 900 km/ hour. Calculate the
potential difference developed between the ends of its wings having a span of 20 m. The horizontal
component of the Earth’s magnetic field is 5 × 10-4 T and the angle of dip is 30°.
solutions
solutions
2019
Q4
State gauss law for magnetism explain its significance
solutions
solutions
Q5
Write the 4 important properties of the magnetic field lines due to a bar magnet.
solutions
solutions
Q6
Write 3 points of differences between para- , dia- and ferro- magnetic materials giving one example
for each.
solutions
solutions
2020
Q7
The magnetic dipole moment of a current carrying coil does not depend upon
a) number of turns of the coil.
b) cross-sectional area of the coil.
c) current flowing in the coil.
d) material of the turns of the coil.
solutions
a) number of turns of the coil.
b) cross-sectional area of the coil.
c) current flowing in the coil.
d) material of the turns of the coil.
solutions
Q8
The magnetic field and angle of dip at a place on the earth are 0·3 G and 30, respectively. The
value of vertical component of the earth’s magnetic field at the place is ___________ .
solutions
solutions
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