Indian Navy INET Mechanical Properties of Solids — practice questions

Explore 3 free Mechanical Properties of Solids questions in Indian Navy INET Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Mechanical Properties of Solids questions and exercises with answers

Showing questions 1–3 of 3.

The SI unit of Young's modulus isRead the answer and worked solution →A uniform pressure $P$ is applied isotropically to a solid sphere of bulk modulus $K$. The fractional change in volume isRead the answer and worked solution →JEEMAIN · Physics · Spot the Error — MechanicsRead the answer and worked solution →

Worked practice questions

The SI unit of Young's modulus is

$\text{N}$
$\text{N m}^{-2}$
$\text{N m}^{2}$
dimensionless

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Correct answer: B. $\text{N m}^{-2}$

$Y = \text{stress}/\text{strain}$. Strain is dimensionless, so $Y$ has the units of stress: $\text{N m}^{-2}$ (i.e. Pa). The same goes for shear modulus $G$ and bulk modulus $K$.

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A uniform pressure $P$ is applied isotropically to a solid sphere of bulk modulus $K$. The fractional change in volume is

$P/K$
$-P/K$
$K/P$
$-K/P$

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Correct answer: B. $-P/K$

$K = -\dfrac{P}{\Delta V / V}$, so $\dfrac{\Delta V}{V} = -\dfrac{P}{K}$. The negative sign reflects that the volume *decreases* under compressive pressure.

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JEEMAIN · Physics · Spot the Error — Mechanics

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Questions

Statement parts
1. Newton's
2. first
3. law
4. states
5. every
6. object
7. at
8. rest
9. stays
10. in
11. motion
12. .
Correction
at rest
Incorrect part
motion
Statement parts
1. Force
2. equals
3. mass
4. divided
5. by
6. acceleration
7. .
Correction
times
Incorrect part
divided
Statement parts
1. For
2. every
3. action
4. there
5. is
6. a
7. smaller
8. reaction
9. .
Correction
equal
Incorrect part
smaller
Statement parts
1. Momentum
2. is
3. the
4. product
5. of
6. mass
7. and
8. displacement
9. .
Correction
velocity
Incorrect part
displacement

Instructions

Find the wrong word or symbol in each line.

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