AIEEE 2008 | Magnetic Properties of Matter Question 57 | Physics

Relative permittivity and permeability of a material $${\varepsilon _r}$$ and $${\mu _r},$$ respectively. Which of the following values of these quantities are allowed for a diamagnetic material?

$${\varepsilon _r} = 0.5,\,\,{\mu _r} = 1.5$$

$${\varepsilon _r} = 1.5,\,\,{\mu _r} = 0.5$$

$${\varepsilon _r} = 0.5,\,\,{\mu _r} = 0.5$$

$${\varepsilon _r} = 1.5,\,\,{\mu _r} = 1.5$$

AIEEE 2006

MCQ (Single Correct Answer)

-1

Needles $${N_1}$$, $${N_2}$$ and $${N_3}$$ are made of ferromagnetic, a paramagnetic and a diamagnetic substance respectively. A magnet when brought close to them will

attract $${N_1}$$ and $${N_2}$$ strongly but repel $${N_3}$$

attract $${N_1}$$ strongly, $${N_2}$$ weakly and repel $${N_3}$$ weakly

attract $${N_1}$$ strongly, but repel $${N_2}$$ and $${N_3}$$ weakly

attract all three of them

AIEEE 2005

MCQ (Single Correct Answer)

-1

A magnetic needle is kept in a non-uniform magnetic field. It experiences :

neither a force nor a torque

a torque but not a force

a force but not a torque

a force and a torque