Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 11

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Which of the following affects the elasticity of a substance?

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Important Questions on Elasticity

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

An iron rod of length

2

m

and cross section area of

50 {mm}^{2}

is stretched by

0.5 mm

, when a mass of

250 kg

is hung from its lower end. Young's modulus of the iron rod is

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 13

Calculate the work done, if a wire is loaded by '

M g

' weight and the increase in length is '

l

'

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 14

An elastic material of Young's modulus

Y

is subjected to a stress

S .

The elastic energy stored per unit volume of the material is

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 15

A stretched rubber has

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 16

On stretching a wire, of length

L

by

l

using force

F

the elastic energy stored per unit volume is

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Alpha Question Bank for Medical: Physics>Chapter 12 - Elasticity>Exercise-2>Q 17

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 18

Two wires

A

and

B

of same length and of the same material have the respective radii

r_{1}

and

r_{2}

. Their one end is fixed with a rigid support, and at the other end equal twisting couple is applied. Then the ratio of the angle of twist at the end of

A

and the angle of twist at the end of

B

will be

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

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