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Two wires $A$ and $B$ of equal lengths are made of the same material.Wire $A$ has diameter that is twice that of $B$ . If identical weights are suspended from the end of these wires, the increase in length is

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Important Questions on Elasticity

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 18

A ideal spring with spring constant

k

is hung from the ceiling and a block of mass

M

is attached to its lower end. The mass is released with the spring initially unstretched. Then the maximum extension in the spring is

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 19

The average depth of Indian ocean is about

3000 m

. The fractional compression,

\frac{Δ V}{V}

of water at the bottom of the ocean (given the bulk modulus of the water

= 2.2 \times 10^{9} {Nm}^{- 2}

and

g = 10 m / s^{2}

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IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 20

A solid sphere of radius

R

made up of a material of bulk modulus

K

is surrounded by a liquid in a cylindrical container. A massless piston of area

A

floats on the surface of the liquid. When a mass

M

is placed on the piston to compress the liquid, the fractional change in the radius of the sphere is

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 21

Two wires are made of the same material and have the same volume. However wire

1

has cross-sectional area

A

and wire

2

has cross-sectional area

3 A .

If the length of wire

1

increases by

Δ x

on applying force

F

, how much force is needed to stretch wire

2

by the same amount?

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 22

A cube is subjected to a uniform volume compression. If the side of the cube decreases by

2 %

, the bulk strain is

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IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 23

A cube of side

40 mm

has its upper face displaced by

0.1 mm

by a tangential force of

8 KN

. The shearing modulus of the cube

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IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 24

The pressure of a medium is changed from

1.01 \times 10^{5} Pa

1.165 \times 10^{5} Pa

and change in volume is

10 %

keeping temperature constant. The Bulk modulus of the medium is

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 12 - Elasticity>EXERCISE>Q 25

Compressibility of water is

5 \times 10^{10} m^{2} N^{- 1} .

The change in volume of

100 mL

water subjected to

15 \times 10^{6} P a

pressure will

Two wires A and B of equal lengths are made of the same material.Wire A has diameter that is twice that of B. If identical weights are suspended from the end of these wires, the increase in length is

Important Questions on Elasticity

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Two wires $A$ and $B$ of equal lengths are made of the same material.Wire $A$ has diameter that is twice that of $B$ . If identical weights are suspended from the end of these wires, the increase in length is