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Mechanical Properties of Solids — NEET & JEE Physics MCQs

30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.

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Sample questions from this chapter

What is elasticity of a material?
  1. Its tendency to regain original size and shape after the deforming force is removed ✓
  2. Its ability to retain every deformation permanently
  3. Its resistance to all applied forces without any internal strain
  4. Its tendency to increase volume whenever pressure is applied
Answer: A. Elasticity is the recovery property by which a deformed body tends to restore its original dimensions.
Why not B: Permanent retention of deformation describes plasticity rather than elasticity.
Why not C: Real solids deform under load; elasticity concerns recovery, not perfect rigidity.
Why not D: Ordinary positive pressure decreases volume and does not define elasticity.
A normal force of 1.00×10³ N acts on area 2.00×10⁻⁴ m². What stress is produced?
  1. 2.00×10⁻¹ Pa
  2. 2.00×10⁷ Pa
  3. 5.00×10⁶ Pa ✓
  4. 2.00×10⁻⁷ Pa
Answer: C. Stress=F/A=(1.00×10³)/(2.00×10⁻⁴)=5.00×10⁶ Pa.
Why not A: This multiplies force by area instead of dividing force by area.
Why not B: This divides by one quarter of the stated area, inserting an extra factor four.
Why not D: This divides area by force, taking the reciprocal of stress.
Two wires in series have the same area and carry the same 100 N tension. Their lengths and Young's moduli are 1.00 m, 1.00×10¹¹ Pa and 2.00 m, 2.00×10¹¹ Pa; area is 1.00×10⁻⁶ m². What is total elongation?
  1. 2.00 mm ✓
  2. 1.00 mm
  3. 3.00 mm
  4. 0.500 mm
Answer: A. The elongations are 1.00 mm and 1.00 mm from FL/(AY), so their series total is 2.00 mm.
Why not B: This calculates the elongation of either individual wire but omits the other series segment.
Why not C: This adds lengths before applying only the smaller modulus to the composite.
Why not D: This uses the larger modulus and only the shorter length for both segments.

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Read the chapter first

Every NCERT question in this chapter is solved, free: NCERT solutions — Mechanical Properties of Solids →

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Questions

How many NEET and JEE questions are there on Mechanical Properties of Solids?

This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 11 chapter.

Is this NEET and JEE Physics chapter test free?

Yes. Every chapter test is free with no login, and you get your all-India rank on every one. Nothing on the site is on sale right now.

Do the questions explain the wrong options?

Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.