Which is a diamagnetic material?

Important Questions on Matter and Magnetism

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Beta Question Bank for Medical: Physics>Chapter 26 - Matter and Magnetism>Exercise (Assertion & Reason)>Q 57

The magnetic susceptibility is negative for

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Beta Question Bank for Medical: Physics>Chapter 26 - Matter and Magnetism>Exercise (Assertion & Reason)>Q 58

Which is ferromagnetic?

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Beta Question Bank for Medical: Physics>Chapter 26 - Matter and Magnetism>Exercise (Assertion & Reason)>Q 59

If ${\theta }_1$ and ${\theta }_2$ be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip $\theta$ is given by:-

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Beta Question Bank for Medical: Physics>Chapter 26 - Matter and Magnetism>Exercise (Assertion & Reason)>Q 60

A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched ON, then the diamagnetic rod is pushed up, out of the horizontal magnetic field. Hence, the rod gains gravitational potential energy. The work required to do this comes from
 

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Beta Question Bank for Medical: Physics>Chapter 26 - Matter and Magnetism>Exercise (Assertion & Reason)>Q 61

A dip circle is taken to geomagnetic equator. The needle is allowed to move in a vertical plane perpendicular to the magnetic meridian. The needle will stay in

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Beta Question Bank for Medical: Physics>Chapter 26 - Matter and Magnetism>Exercise (Assertion & Reason)>Q 62

A coil in the shape of an equilateral triangle of side $0.02 \mathrm{m}$ is suspended from the vertex such that it is hanging in a vertical plane between the pole-pieces of a permanent magnet producing a horizontal magnetic field of $5\times {10}^{-2} \mathrm{T}$. When a current of $0.1 \mathrm{A}$ passes through it and the magnetic field is parallel to its plane, then the couple acting on the coil is:-

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Beta Question Bank for Medical: Physics>Chapter 26 - Matter and Magnetism>Exercise (Assertion & Reason)>Q 63

A solenoid of length $0.4 \mathrm{m}$ having $500 \mathrm{turns}$ and $3 \mathrm{A}$ current flows through it. A coil of radius $0.01 \mathrm{m}$ and have $10 \mathrm{turns}$ and carries a current of $0.4 \mathrm{A}$ has to placed such that its axis is perpendicular to the axis of the solenoid, then torque on the coil will be:-

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Beta Question Bank for Medical: Physics>Chapter 26 - Matter and Magnetism>Exercise (Assertion & Reason)>Q 64

Force between two identical bar magnets whose centres are $\mathrm{r}$ meter apart is $4.8 \mathrm{N}$ when their axes are in same line. If separation is increased to $2r$, the force between them is reduced to :