Free Physics of Solids MCQs with Answers
320 Physics of Solids MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Solids are compared through crystal structure, amorphous arrangement, elasticity, plastic deformation, stress, strain and Young’s modulus. Electrical behavior depends on available charge carriers and band structure, so conductors, insulators and semiconductors must be distinguished from mechanical properties such as strength, stiffness and brittleness.
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320 questions · page 13 of 16
- A. Young's modulus
- B. Shear modulus
- C. Modulus of rigidity
- D. Bulk modulus
Explanation: The correct answer is the Bulk modulus. This modulus is crucial for understanding how fluids respond to changes in pressure, which…
Correct answer: Bulk modulus- A. Product of volume and its pressure
- B. The change in pressure per unit change in volume strain
- C. The fractional change in volume per unit change in pressure
- D. None of the above
Explanation: Compressibility is a measure of how much the volume of a material decreases under pressure.
Correct answer: The fractional change in volume per unit change in pressure- A. 4 : 1
- B. 16 : 1
- C. 8 : 1
- D. 1 : 1
Explanation: The modulus of rigidity, also known as shear modulus, is a property that only depends on the material composition, not on its dimensions…
Correct answer: 1 : 1- A. Non zero constant
- B. Infinite
- C. Zero
- D. Cannot be predicted
Explanation: The modulus of rigidity, also known as shear modulus, is a property that measures a material's ability to withstand shear stress.
Correct answer: Cannot be predicted- A. Length
- B. Breadth
- C. Shape
- D. Volume
Explanation: Shearing stress involves forces that act parallel to the surface of a material, causing it to deform by sliding layers over one another…
Correct answer: Shape- A. Stress × Strain
- B. 2 × Stress × Strain
- C. 1/2 × Strain × Stress
- D. Stress/Strain
Explanation: The correct answer is 1/2 × Strain × Stress. This formula is derived from the work done on an elastic wire or material.
Correct answer: 1/2 × Strain × Stress- A. 1 : 2
- B. 1 : 4
- C. 2 : 1
- D. 1 : 1
Explanation: The work done on a wire is given by the expression W = (1/2) × F × ΔL, where ΔL is the change in length.
Correct answer: 1 : 2- A. Zero
- B. 0.05 joule
- C. 100 joule
- D. 500 joule
Explanation: The energy stored in a stretched wire is given by the formula U = (1/2) × F × e, where F is the force applied, and e is the elongation.
Correct answer: 0.05 joule- A. 3 : 2
- B. 2 : 3
- C. 3 : 4
- D. 4 : 3
Explanation: The elastic energy per unit volume (u) is given by the formula u = (1/2) * stress2 / Young's modulus.
Correct answer: 3 : 2- A. Remains constant
- B. Decreases
- C. Increases
- D. None of the above
Explanation: When strain is applied to a body within the elastic limit, work is done to deform the body.
Correct answer: Increases- A. Converts into kinetic energy
- B. Converts into heat energy
- C. Remains as potential energy
- D. Transforms into sound energy
Explanation: When force is applied to a body, it stores energy as elastic potential energy.
Correct answer: Converts into kinetic energy- A. Fl / 2AL
- B. FA / 2L
- C. FL / 2A
- D. FL / 2
Explanation: The elastic energy stored per unit volume in a stretched wire can be derived from the formula for elastic potential energy, which is…
Correct answer: Fl / 2AL- A. Aluminium
- B. Bismuth
- C. Copper
- D. Nickel
Explanation: The correct answer is Nickel. Nickel is a ferromagnetic material, which means it can be magnetised and retain its magnetisation over time…
Correct answer: Nickel- A. Start from the north pole and end at the south pole
- B. Run continuously through the bar and outside
- C. Emerge in circular paths from the middle of the bar
- D. Are produced only at the north pole like rays of light from a bulb
Explanation: The correct answer is that lines of magnetic induction run continuously through the bar and outside.
Correct answer: Run continuously through the bar and outside- A. Scalar quantity
- B. Vector quantity
- C. Both (a) and (b)
- D. None of the above
Explanation: The correct answer is that magnetic induction is a vector quantity. This is because it has both magnitude and direction.
Correct answer: Vector quantity- A. Magnetic moment per unit volume
- B. Magnetic induction force acting on a unit pole
- C. Number of lines of force crossing per unit area
- D. Number of lines of force crossing per unit volume
Explanation: Magnetic field intensity, also known as magnetic flux density, is correctly defined as the number of magnetic lines of force crossing per…
Correct answer: Number of lines of force crossing per unit area- A. Weber/m²
- B. Weber/m
- C. Weber-m
- D. Weber-m²
Explanation: Magnetic induction, also known as magnetic flux density (B), is defined as the magnetic flux (Φ) per unit area (A).
Correct answer: Weber/m²- A. A force and a torque
- B. A force but not a torque
- C. A torque but not a force
- D. Neither a torque nor a force
Explanation: A magnetic needle placed in a non-uniform magnetic field experiences both a force and a torque.
Correct answer: A force and a torque- A. A point always has a single net magnetic field
- B. The lines never cross each other
- C. The lines need magnetic lenses to be made to intersect
- D. None of the above
Explanation: The correct answer is that a point always has a single net magnetic field.
Correct answer: A point always has a single net magnetic field- A. Placed inside an aluminium case
- B. Placed inside an iron case
- C. Wrapped with insulation around it when passing current through it
- D. Surrounded with fine copper sheet
Explanation: The correct answer is to place the equipment inside an iron case. Iron is a ferromagnetic material, which means it can absorb and redirect…
Correct answer: Placed inside an iron case