JEE Main 2013 (Offline) | Magnetic Properties of Matter Question 62 | Physics

JEE Main 2013 (Offline)

MCQ (Single Correct Answer)

-1

Two short bar magnets of length $$1$$ $$cm$$ each have magnetic moments $$1.20$$ $$A{m^2}$$ and $$1.00$$ $$A{m^2}$$ respectively. They are placed on a horizontal table parallel to each other with their $$N$$ poles pointing towards the South. They have a common magnetic equator and are separated by a distance of $$20.0$$ $$cm.$$ The value of the resultant horizontal magnetic induction at the mid-point $$O$$ of the line joining their centres is close to $$\left( \, \right.$$ Horizontal component of earth's magnetic induction is $$3.6 \times 10.5Wb/{m^2})$$

$$3.6 \times 10.5\,\,Wb/{m^2}$$

$$2.56 \times 10.4\,\,Wb/{m^2}$$

$$3.50 \times 10.4\,\,Wb/{m^2}$$

$$5.80 \times 10.4\,Wb/{m^2}$$

AIEEE 2008

MCQ (Single Correct Answer)

-1

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

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