HSC Science (Electronics) 12th Board ExamMaharashtra State Board
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# Distinguish Between Diamagnetic and Paramagnetic Substances - HSC Science (Electronics) 12th Board Exam - Physics

ConceptMagnetic Properties of Materials

#### Question

Distinguish between diamagnetic and paramagnetic substances

#### Solution

 No Diamagnetic substance Paramagnetic substance 1 In an external magnetic field, a substance gets weakly magnetised in the direction opposite to that of the field. In an external magnetic field, a paramagnetic substance gets weakly magnetised in the same direction as that of the field. 2 When placed in a non-uniform   magnetic field, it tends to move from the stronger to the weaker part of the field. When placed in a non-uniform magnetic field, it tends to move from the weaker to the stronger part of the field. 3 It is weakly repelled by a magnet. It is weakly attracted by a magnet 4 Magnetic moment of every atom of adiamagnetic substance is zero. Every atom of a paramagnetic substance is a magnetic dipole having a certain resultant magnetic moment. 5 When a rod of diamagnetic substance is suspended in a uniform magnetic field, it comes to rest with its length perpendicular to the direction of the field. When a rod of paramagnetic substance is suspended in a uniform magnetic field, it comes to rest with its length parallel to the direction of the field. 6 There is no effect of temperature ondiamagnetic substance. There is effect of temperature on paramagnetic substance.

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#### APPEARS IN

2016-2017 (July) (with solutions)
Question 5.5 | 2.00 marks

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Solution Distinguish Between Diamagnetic and Paramagnetic Substances Concept: Magnetic Properties of Materials.
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