The compressibility of water is 46 . 4 × 10 – 6 atm - 1 . This means that

volume of water decreases by 46 . 4 one-millionths of the original volume for each atmosphere increase in pressure.

the bulk modulus of water is 46 . 4 × 10 6 atm .

when water is subjected to an additional pressure of one atmosphere, its volume decreases by 46 . 4 % .

when water is subjected to an additional pressure of one atmosphere, its volume is reduced to 10 – 6 of its original volume.

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-1>Q 6

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Two wires of equal length and cross-section area suspended as shown in the figure. Their Young's modulus are $Y_{1}$ and $Y_{2}$ respectively. The equivalent Young's modulus will be

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-1>Q 7

The load versus elongation graph for four wires of the same materials is shown in the figure. The thinnest wire is represented by the line:

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-1>Q 9

A solid cylinder of radius

r

and length

l

is clamped at its upper end and the lower end is twisted through

θ

. The shear strain is given by.

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-1>Q 11

If work done in stretching a wire by

1 mm

is

2 J

, the work necessary for stretching another wire of the same material, but with double the radius and half the length by

1 mm

in joule is

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 1

A force

F

is needed to break a copper wire having radius

R

. The force needed to break a copper wire of radius

2 R

will be:

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

A

50 kg

motor rests on four cylindrical rubber blocks. Each block has a height of

4 cm

and a cross-sectional area of

16 {cm}^{2}

. The shear modulus of rubber is

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

. A sideways force of

500 N

is applied to the motor. The distance that the motor moves sideways is

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 3

A brass rod of length

2 m

and cross-sectional area

2.0 {cm}^{2}

is attached end to end to a steel rod of length

L

and cross-sectional area

1.0 {cm}^{2}

. The compound rod is subjected to equal and opposite pulls of magnitude

5 \times 10^{4} N

at its ends. lf the elongations of the two rods are equal, then the length of steel rod

(L)

is

(Y_{Brass} = 1.0 \times 10^{11} N m^{- 2} and Y_{Steel} = 2.0 \times 10^{11} N m^{- 2})

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 4

The compressibility of water is

46.4 \times 10^{- 6} {atm}^{- 1}

. This means that

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 5

If the ratio of lengths, radii and Young’s moduli of steel and brass wires in the figure are $a, b$ and $c$ respectively. Then the corresponding ratio of increase in their lengths would be:

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Two wires of equal length and cross-section area suspended as shown in the figure. Their Young's modulus are Y1 and Y2 respectively. The equivalent Young's modulus will be

Important Questions on Elasticity

Learn and Prepare for any exam you want !

Two wires of equal length and cross-section area suspended as shown in the figure. Their Young's modulus are $Y_{1}$ and $Y_{2}$ respectively. The equivalent Young's modulus will be