JEE PHYSICS MCQ: MAGNETISM AND MATTER

1 Medium

1 of 1

Understanding +4 | -1

Assertion(A): The ferro magnetic substances do not obey curie's law.

Reason(R): At curie point ferro magnetic substances start behaving as a para magnetic substances.

View answer and explanation

Correct option: B

If both (A) and (R) are true but (R) is not a correct explanation of the (A)

Option B (If both (A) and (R) are true but (R) is not a correct explanation of the (A)) is correct because both the assertion and reason are true, but the reason does not explain the assertion.

More Questions from MAGNETISM AND MATTER

Practice All Chapter MCQs →

Curie temperature is the one above which A vibration magnetometer consists of two identical bar magnets placed one over the other such that they are perpendicular and bisect each other. The time period of oscillation in a horizontal magnetic field is

{2^{5/4}}

s. One of the magnets is removed and if the other magnet oscillates in the same field , then the time period in second is The relative permeability of a substance

X

is slightly less than unity and that of substance

Y

is slightly more than unity, then A bar magnet is equivalent to If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by

\mu_{\mathrm{d}}, \mu_{\mathrm{p}}

and

\mu_{\mathrm{f}}

respectively, then :- Which of the following is most suitable for the core of electromagnets