If the temperature increases, the modulus of elasticity
Correct answer: A. Decreases
- A. Decreases
- B. Increases
- C. Remains constant
- D. Becomes zero
Explanation
The modulus of elasticity, also known as Young's modulus, measures a material's resistance to deformation. As the temperature increases, atoms in the solid vibrate more intensely, weakening the intermolecular forces. This increased atomic movement reduces the stiffness of the material, hence decreasing the modulus of elasticity. This explains why Option A: Decreases is correct. Option B is incorrect because increased atomic vibrations typically reduce, not increase, the modulus. Option C is incorrect since the modulus changes with temperature. Option D is incorrect because the modulus doesn't become zero unless the material becomes a liquid.
Last updated
About Physics of Solids
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.
Practise Physics of Solids
320 free Physics of Solids MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 9 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A 4.0 m long wire is subjected to stretching force and its length increases by 40 cm. The percent elongation which the wire undergoes is:
A ball falling in a lake of 200 m shows a decrease of 0.1% in its volume. The bulk modulus of elasticity of the material of the ball is: (take g = 10 m/s²)
A ball falling in a lake of 200 m shows a decrease of 0.1% in its volume. The bulk modulus of elasticity of the material of the ball is: (take g =10 m/s2)
A block weighing 40 kg extends a spring by 0.16m from its unscratched position. What is the value of k?
A body floats in a liquid contained in a beaker. The whole system, as shown, falls freely under gravity. The upthrust on the body due to the liquid is: