MDCAT Physics MCQ's Test With Answers

MDCAT Physics MCQ's Test

Sr. # Questions Answers Choice
1 The band full of electrons, which donot play any part in the conduction process is known as Conduction band Forbidden energy band Valence band Completely filled band
2 The band above the valence band is Completely filled band Conduction band Forbidden energy band None of these
3 The valence energy band may be either Completely filled Partially filled a and b All of them
4 The valence energy band can never be Filled Partially filled Empty None of these
5 The electrons occupying the outermost shell of an atom and the electrons occupying in the energy band are called Energy band Valence band Forbidden energy band None of these
6 In between two consecutive permissible energy band there is a range of energy states which cannot be occupied by electrons. These are called Energy band Energy states Forbidden energy gap None of these
7 When an atom is surrounded by large number of atoms their the energy levels are Distinct Very close Energy band None of these
8 When an atom is isolated, it energy levels are Distinct Very close Very very close None of these
9 The theory which explains the vast diversity in an electrical behaviour of all types the materials is Free electron theory Band theory Theory based as chemical properties None of these
10 Semiconductor materials have the conductivities generally lies between 10<sup>-5</sup> to 10<sup>-6</sup> (Ωm)<sup>-1</sup> 10<sup>-6</sup> to 10<sup>-4</sup> (Ωm)<sup>-1</sup> 10<sup>-7</sup> to 10<sup>-3</sup> (Ωm)<sup>-1</sup> None of these
11 The example of insulators are Copper Nickel Diamond None of these
12 The insulators have conductivities ties in the range 10<sup>-10</sup> to 10<sup>-20</sup> (Ωm)<sup>-1</sup> 10<sup>-5</sup> to 10<sup>-20</sup> (Ωm)<sup>-1</sup> 10<sup>-15</sup> to 10<sup>-25</sup> (Ωm)<sup>-1</sup> None of these
13 The conductivities of conductors (metals) have 10<sup>5</sup> (Ω)<sup>-1</sup> 10<sup>7</sup> (Ωm)<sup>-1</sup> 10<sup>8</sup> (Ωm)<sup>-1</sup> 10<sup>9</sup> (Ωm)<sup>-1</sup>
14 A steel wire 12 mm in diameter is fastened to a log and them pulled by a tractor. The length of stire between the log and tractor is 11 m. The force of 10,000 N is required to pull the log. What is stress 84.46 MPa 85.46 MPa 88.46 MPa 89.46 MPa
15 The work done by stretching force is the area of Trapezium Triangle Rectangle None of these
16 In deformation of the material, the potential energy of the molecules due to displacement from their mean positions is Lost Gained No lost no gain None of these
17 Examples of brittle substances are Glass Copper Lead None of these
18 Which of the material is brittle ? Steel Low carbon steel High carbon steel None of these
19 The ultimate tensile strength (UTS) can be regarded as the Maximum strength of the material Nominal strength of the material Minimum strength of the material None of these
20 Brittle is the property of the substance in which a material undergoes Elastic deformation Plastic deformation Ultimate tensile strength limit None of these
21 Ductility is the property of a substance in which a material undergoes the deformation as Elastic deformation Plastic deformation Shear deformation None of these
22 The ultimate tensile strength of the material can be regarded as Maximum strength Nominal strength&nbsp; No strength None of these
23 The ultimate tensile strength is Greatest stress, a material can endure Stress is increased beyond the yield strength Maximum stress, a material can with stand None of these
24 The region of plasticity represents Proportional limit&nbsp;σ<sub>p</sub> Elastic limit&nbsp;σ<sub>e</sub> UTS (ultimate tensile strength&nbsp;σ<sub>n</sub>) None of these
25 If the stress increased on a material is beyond the yield strength of the material is called Plasticity Elasticity Still in elasticity None of these
26 Elastic deformation of a material is the deformation which is Permanent&nbsp; Temporary&nbsp; Some what permanent&nbsp; None of these
27 In proportional limit (σ) of material, the stress increases with strain Linearly Constant Abruptly increases None of these
28 Shear modulus for water is - 4.7 - 3.3 - 1.2 0
29 Bulk modulus for water is 2.2 4.5 6.2 7.3
30 Young's modulus for water is 0 2 5 9
31 Shear modulus for tungsten is 50 100 150 200
32 Bulk modulus for tungsten is 50 100 150 200
33 Young's modulus for tungsten is 90 190 390 590
34 Shear modulus for steel is 20 84 95 202
35 Bulk modulus for steel is 60 120 160 170
36 Young's modulus for steel is 100 200 300 400
37 Shear modulus for mercury is 0 12 27 42
38 Bulk modulus for mercury is 27 29 29.4 30
39 Young's modulus for mercury is 0 2 5 6
40 Shear modulus for lead is 1.7 4.9 5.6 6.2
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