Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 19

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The upper end of a wire of radius $4 mm$ and length $100 cm$ is clamped and its other end is twisted through an angle of $30 °$ . Then angle of shear is

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Important Questions on Elasticity

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IMPORTANT

Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 20

A

2 m

long rod of radius

1 cm

which is fixed from one end is given a twist of

0.8

radians. The shear strain developed will be

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 22

When a force is applied on a wire of uniform cross-sectional area

3 \times 10^{- 6} m^{2}

and length

4 m

, the increase in length is

1 mm

. Energy stored in it will be

(Y = 2 \times 10^{11} N / m^{2})

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 23

The elastic energy stored in a wire of Young's modulus

Y

is

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 24

A wire of length

50 cm

and cross sectional area of

1 sq . mm

is extended by

1 mm

. The required work will be

(Y = 2 \times 10^{10} {Nm}^{- 2})

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 26

When a load of

5 kg

is hung on a wire then extension of

3

meter takes place, then work done will be :

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 27

When a load of

5 kg

is hung on a wire then extension of

3

metre takes place, then work done will be:

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 28

A $1 m$ long metal wire of cross sectional area $10^{- 6} m^{2}$ is fixed at one end from a rigid support and a weight $W$ is hanging at its other end. The graph shows the observed extension of length $Δ ℓ$ of the wire as a function of $W$ . Young's modulus of material of the wire in $SI$ units is