Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 18

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The ratio of adiabatic to isothermal elasticity of a diatomic gas is

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Important Questions on Mechanical Properties of Solids

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 19

For an elastic material

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 20

When a small mass

m

is suspended at lower end of an elastic wire having upper end fixed with ceiling. There is loss in gravitational potential energy, let it be

x

, due to extension of wire, mark correct option

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 21

A mild steel wire of length

2 l

meter cross-sectional area

A m^{2}

is fixed horizontally between two pillars. A small mass

m kg

is suspended from the mid point of the wire. If extension in wire are within elastic limit. Then depression at the mid point of wire will be

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 22

A rigid bar of mass

15 kg

is supported symmetrically by three wire each of

2 m

long. These at each end are of copper and middle one is of steel. Young's modulus of elasticity for copper and steel are

110 \times 10^{9} N m^{- 2}

and

190 \times 10^{9} N m^{- 2}

respectively. If each wire is to have same tension, ratio of their diameters will be

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 23

The strain energy stored in a body of volume

V

due to shear strain

ϕ

is (shear modulus is

G

)

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 24

A metal wire having Poisson's ratio

\frac{1}{4}

and Young's modulus

8 \times 10^{10} N m^{- 2}

is stretched by a force, which produces a lateral strain of

0.02 %

in it. The elastic potential energy stored per unit volume in wire is

[in J m^{- 3}]

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 25

Which of the following curve represents the correctly distribution of elongation

(y)

along heavy rod under its own weight

L \to

length of rod,

x \to

distance of point from lower end?

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Gamma Question Bank for Medical Physics>Chapter 9 - Mechanical Properties of Solids>Assignment>Q 26

A wire can sustain a weight of

15 kg

. If it cut into four equal parts, then each part can sustain a weight