Physics of Solids Class 12 MCQ: Class 12 Physics MCQ Questions and Answer. Students get here all Important MCQ on Physics of Solids Class 12.
Physics of Solids Class 12 MCQ with Answers:
Multiple choice questions
1.) The ability of the body to return to its original shape is called.
a) Stress.
b) Equality
c) Stability.
d) Elasticity
Ans : d) Elasticity
2.) The force applied on unit area to produce any change in the shape, volume or length of a body , is called
a) Stress.
b) Strain
c) Stability.
d) Elasticity
Ans : b) Strain
3.) Stress can be expressed as
a) Force/Area.
b) Area/Force
c) Force/ Change in length.
d) Area / Original length
Ans : a) Force / Area
4.) The SI unit of stress is
a)Nm-2
b) Nm2
c) N-1m-2
d) N2m2
Ans : a) Nm-2
5.) Pascal (Pa) can be expressed as.
a)N-1m-1.
b) N2m2
c)Nm-2
d) Nm-1
Ans : c) Nm-2
6.) When a stress changes length, it is called
a) Distance stress.
b) Length stress
c) Tensile stress.
d) Shear stress
Ans : c) Tensile stress
7.) When a stress changes shape it is called.
a)Shaper stress.
b) Shear stress
c) Tensile stress.
d) Length stress
Ans : b) Shear stress
8.) The measure of the deformation of a solid when stress is applied to it, then it is known as.
a) Stress.
b) Change in length
c) Strain.
d) Volume stress
Ans : c) Strain
9.) Strain can be expressed as.
a) Force/Area.
b) Force/ Change in length
c) Change in length/Original length.
d) Area/ original length
Ans : c) Change in length / Original length
10.) Volumetric strain can be expressed as.
a) ∆V/∆V0.
b) ∆V/∆t
c) ∆V0/V
d) ∆V0/∆t
Ans : a) ∆V/∆V0
11.) Shear strain can be expressed as.
a)∆a.tanθ.
b) tanθ
c) ∆a².
d) tan-1θ
Ans : b) tanθ
12.) When small value of angle θ, measure in radiun then shear strain will be.
a) tanθ.
b) tan-1θ
c) θ.
d) ∆a
Ans : c) θ
13.) The formula for modulus of elasticity is.
a) Stress/ Strain.
b) Stress / Area
c) Area / Strain.
d) Strain / Stress
Ans : a) Stress / Strain
14.) The ratio of tensile stress to tensile strain is called
a) Bulk modulus.
b) Young’s modulus.
c) Shear modulus.
d) Volume modulus
Ans : b) Young’s modulus
15.) Young’s modulus can be expressed as, Y=______
a)(F/A)/(∆l/l).
b) (∆l/l)/(F/A)
c) (∆l/F)/(A/l).
d) F.A/∆l.l
Ans : a) (F/A)/(∆l/l)
16.) The ratio of applied stress to volumetric strain is called.
a) Young’s modulus
b) Bulk modulus
c) Shear modulus
d) Elastic modulus
Ans : b) Bulk modulus
17.) Bulk modulus can be expressed as, K = ________
a) (F/A)/(∆l/l)
b) (F/A)/(∆V/V)
c) (F/A)/(V/∆V)
d) (F/A)/tanθ
Ans : b) ( F/A)/(∆V/V)
18.) The ratio of shear Stress and shear strain is called.
a) Young’s modulus
b) Bulk modulus
c) Shear modulus
d) Elastic modulus
Ans : c) Shear modulus
19.) Shear modulus can be expressed as, G=_______
a) (F/A)/tanθ
b) (F/A)/(∆l/l)
c) (F/A)/∆l
d) (F/A)/∆V
Ans : a) (F/A)/ tanθ
20.) Work done of the wire can be expressed as, Work done = ____((EAl12)/L)
a)½.
b) A/2
c) 3/2.
d) F/2
Ans : a) ½
21.) The electron in the outermost shell of an atom is called.
a) Valence electron.
b) Positive electron
c) Neutral electron.
d) Nagetive electron
Ans : a) Valence electron
22.) What is the name of the materials in which valence electron are bound very tightly to their atoms and are not free.
a) Capacitors.
b) Insulators
c) Inductors.
d) Resistores
Ans : b) Insulators
23.) What is the name of the material which have plenty of free electrons for electrical conduction.
a) Insulators.
b) Conductors
c) Resistores.
d) Inductors
Ans : b) Conductors
24.) An atom in which there is a resultant Magnetic field , behaves like a tiny Magnet and is called.
a) Dipole atom
b) Dipole moment
c) Magnetic dipole
d) Magnetic moment
Ans : c) Magnetic dipole
25.) The combination of solenoid and a specimen of iron inside it, makes a powerful Magnet then it is called.
a) Iron magnet
b) Solenoid magnet
c) Bar magnet
d) Electromagnet
Ans : d) Electromagnet
26.) The magnetic flux density increases from zero and reaches a maximum value . At this stage the material is said to be.
a) Magnetically retantiveted
b) Magnetically saturated
c) Magnetically coerciveted
d) Hysteresis
Ans : b) Magnetically saturated
27.) A crystalline solid consists of there dimensional pettern that repeats itself over and over again. This is called,
a) Atomic cell.
b) Electric cell
c) Magnetic cell.
d) Unit cell
Ans : d) Unit cell.
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