NEET Physics: Mechanical Properties of Solids — MCQ Test 9

Q6. An aluminium block of dimensions \( 0.3 \, \text{m} \times 0.2 \, \text{m} \times 0.05 \, \text{m} \) is subjected to a shearing force of \( 1.5 \times 10^4 \, \text{N} \). If the shear modulus of aluminium is \( 2.5 \times 10^{10} \, \text{N/m}^2 \), what is the shear strain?

Q7. Why do engineers prefer materials with a large Young’s modulus for designing columns and beams?

Q8. A steel rod of length 0.8 m and cross-sectional area 2 × 10 -5 m 2 is compressed by a force of 800 N. If the Young's modulus of steel is 2 × 10 11 N/m 2 , what is the compression?

Q9. In designing bridges, why is it critical to understand the elastic properties of materials?

Q10. A glass slab of volume 0.005 m 3 is compressed by a pressure of 3 × 10 6 N/m 2 . If the bulk modulus of glass is 3.7 × 10 10 N/m 2 , what is the change in volume?

NEET PhysicsMechanical Properties of Solids

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A cylindrical rod of length 0.5 m and radius 0.01 m is compressed by a force of 5000 N. If the compressive stress is 5 × 10 6 N/m 2 , what is the cross-sectional area of the rod?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Mechanical Properties of Solids. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Cylindrical, Compressed, Compressive, Sectional, Stretched, and Elongation.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. A cylindrical rod of length 0.5 m and radius 0.01 m is compressed by a force of 5000 N. If the compressive stress is 5 × 10 6 N/m 2 , what is the cross-sectional area of the rod?

  • A. 10 -3 m 2
  • B. 10 -2 m 2
  • C. 5 × 10 -3 m 2
  • D. 2 × 10 -3 m 2

Q2. A steel wire of length \( 2.5 \, \text{m} \) and cross-sectional area \( 3.5 \times 10^{-6} \, \text{m}^2 \) is stretched by a force of \( 350 \, \text{N} \). If the elongation is \( 0.2 \, \text{mm} \), what is the Young's modulus of steel?

  • A. \( 1 \times 10^{12} \, \text{N/m}^2 \)
  • B. \( 1.5 \times 10^{12} \, \text{N/m}^2 \)
  • C. \( 1.2 \times 10^{12} \, \text{N/m}^2 \)
  • D. \( 1.25 \times 10^{12} \, \text{N/m}^2 \)

Q3. Why do engineers prefer materials with a large Young’s modulus for designing columns and beams?

  • A. They are more ductile
  • B. They have lower density
  • C. They are more brittle
  • D. They provide greater stiffness

Q4. Why are I-shaped beams commonly used in construction for load-bearing applications?

  • A. They have a higher shear modulus
  • B. They provide a large load-bearing surface with reduced bending
  • C. They have a lower density
  • D. They exhibit greater ductility

Q5. An aluminium wire of length \( 2.5 \, \text{m} \) and cross-sectional area \( 1.5 \times 10^{-6} \, \text{m}^2 \) is stretched by a force of \( 150 \, \text{N} \). If the Young's modulus of aluminium is \( 7 \times 10^{10} \, \text{N/m}^2 \), what is the stress?

  • A. \( 1 \times 10^8 \, \text{N/m}^2 \)
  • B. \( 1.5 \times 10^8 \, \text{N/m}^2 \)
  • C. \( 2 \times 10^8 \, \text{N/m}^2 \)
  • D. \( 5 \times 10^7 \, \text{N/m}^2 \)

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