MDCAT Physics Chapter 13 Deformation of Solids MCQ's Test With Answers

MDCAT Physics Chapter 13 Deformation of Solids MCQ's Test

Sr. # Questions Answers Choice
1 The energy dissipated per cycle for iron in hysteresis loop is less than for steel equal to the steel more than the steel any one of them
2 The coercivity of the steel is less than the iron equal to the iron more than the iron any one of them
3 In the hysteresis loop, when the current is reduced to zero, the material does not retain magnetism retains not retain magnetism retains strong magnetism none of them
4 In the phenomenon of hysteresis. magnetism leads the magnetising current magnetism lags behind the magnetising current magnetism goes along the magnetising current none of them
5 The curie temperature of iron is called 250<span style="font-weight: bold; color: rgb(106, 106, 106); font-family: arial, sans-serif; font-size: small;">°C</span> 500<span style="font-weight: bold; color: rgb(106, 106, 106); font-family: arial, sans-serif; font-size: small;">°</span><span style="color: rgb(106, 106, 106); font-family: arial, sans-serif; font-size: small;">C</span> 750<span style="font-weight: bold; color: rgb(106, 106, 106); font-family: arial, sans-serif; font-size: small;">°C</span> 1000<span style="font-weight: bold; color: rgb(106, 106, 106); font-family: arial, sans-serif; font-size: small;">°C</span>
6 Above the curie temperature, iron becomes ferromagnetic paramagnetic diamagnetic any one of them
7 Ferromagnetic substances lose their magnetism when heated above a certain temperature, known as critical temperature curie temperature high temperature fixed temperature
8 Which of the following can become a good temporarily magnet? iron steel both of them none of them
9 Which of the following can become a good permanent magnet? iron steel both of them none of them
10 In a soft iron, domains are easily oriented along external field and do not return to original random positions easily oriented along external field and readily returns to originally random positions do not oriented along external field and also do not returns to original random position none of them
11 Within each domain, the magnetic fields of all the spinning electrons are parallel antiparallel perpendicular all of them
12 The size of the domains in such that they can contain 10<sup>2</sup>to 10<sup>4</sup>atoms 10<sup>4</sup>to 10<sup>8</sup>atoms 10<sup>8</sup>to 10<sup>12</sup>atoms 10<sup>12</sup>to 10<sup>16</sup>atoms
13 The domains are of macroscopic size of the order of centimetres metres millimetres nanometres
14 Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called tiny regions domains vectors none of them
15 Iron, cobalt and nickle are examples of diamagnetic substances ferromagnetic substances paramagnetic substances all of them
16 The substances in which atoms cooperate with each other in such a way so as to exhibit a strong magnetic effect, are called diamagnetic substances ferromagnetic substances paramagnetic substances all of them
17 The substances in which atoms are so oriented that the field produced by spin and orbital motion of the electrons might add up to zero, are called diamagnetic substances ferromagnetic substances paramagnetic substances all of them
18 The substances in which, atom are so oriented that their field support each other and the atoms behave like tiny magnets, are called diamagnetic substances ferromagnetic substances paramagnetic substances all of them
19 The charged nucleus of an atom itself spins, it's magnetic field equals the field produced by orbital electrons greater than the field produced by orbital electrons much weaker than the field produced by orbital electrons none of them
20 An atom in which there is a resultant magnetic field, behaves like a tiny magnet and is called as magnetic magnetic dipole magnetic monopole none of them
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