Physics-

General

Easy

### Question

#### If the shear modulus of a wire material is 5.9 then the potential energy of a wire of in diameter and 5 cm long twisted through an angle of 10’ , is

#### The correct answer is:

#### To twist the wire through the angle it is necessary to do the work

And

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### Related Questions to study

physics-

#### The Young’s modulus of the material of a wire is equal to the

Young’s modulus of material

If longitudinal strain is equal unity, then

Linear stress produced

If longitudinal strain is equal unity, then

Linear stress produced

#### The Young’s modulus of the material of a wire is equal to the

physics-General

Young’s modulus of material

If longitudinal strain is equal unity, then

Linear stress produced

If longitudinal strain is equal unity, then

Linear stress produced

Maths-

Maths-General

physics-

#### Two short bar magnets of equal dipole moment M are fastened perpendicularly at their centers, figure. The magnitude of resultant of two magnetic field at a distance from the center on the bisector of the right angle is

Resolving the magnetic moments along and perpendicular to figure we find that component perpendicular cancel out. Resultant magnetic moment along

The point lies on axial line of magnet of moment

The point lies on axial line of magnet of moment

#### Two short bar magnets of equal dipole moment M are fastened perpendicularly at their centers, figure. The magnitude of resultant of two magnetic field at a distance from the center on the bisector of the right angle is

physics-General

Resolving the magnetic moments along and perpendicular to figure we find that component perpendicular cancel out. Resultant magnetic moment along

The point lies on axial line of magnet of moment

The point lies on axial line of magnet of moment

physics-

#### Two magnets of equal mass are joined at 90 each other as shown in figure. Magnet has a magnetic moment times that of . The arrangement is pivoted so that it is free to rotate in horizontal plane. When in equilibrium, what angle should make with magnetic meridian?

In equilibrium, the resultant magnetic moment will be along magnetic meridian. Let make with resultant

#### Two magnets of equal mass are joined at 90 each other as shown in figure. Magnet has a magnetic moment times that of . The arrangement is pivoted so that it is free to rotate in horizontal plane. When in equilibrium, what angle should make with magnetic meridian?

physics-General

In equilibrium, the resultant magnetic moment will be along magnetic meridian. Let make with resultant

physics-

#### The pressure applied from all directions on a cube is . How much its temperature should be raised to maintain the original volume? The volume elasticity of the cube is and the coefficient of volume expansion is

If coefficient of volume expansion is and rise in temperature is then

Volume elasticity

Volume elasticity

#### The pressure applied from all directions on a cube is . How much its temperature should be raised to maintain the original volume? The volume elasticity of the cube is and the coefficient of volume expansion is

physics-General

If coefficient of volume expansion is and rise in temperature is then

Volume elasticity

Volume elasticity

physics-

#### A wire has length 1 m and cross-sectional area 1 The work required to increase the length by 2 mm is

Work done =

= 4

= 4

#### A wire has length 1 m and cross-sectional area 1 The work required to increase the length by 2 mm is

physics-General

Work done =

= 4

= 4

physics-

#### The diagram shows a force-extension graph for a rubber band. Consider the following statements

I. It will be easier to compress this rubber than expand it

II. Rubber does not return to its original length after it is stretched

III. The rubber band will get heated if it is stretched and released

Which of these can be deduced from the graph

Area of hysterisis loop gives the energy loss in the process of stretching and unstretching of rubber band and this loss will appear in the form of heating

#### The diagram shows a force-extension graph for a rubber band. Consider the following statements

I. It will be easier to compress this rubber than expand it

II. Rubber does not return to its original length after it is stretched

III. The rubber band will get heated if it is stretched and released

Which of these can be deduced from the graph

physics-General

Area of hysterisis loop gives the energy loss in the process of stretching and unstretching of rubber band and this loss will appear in the form of heating

physics-

#### A wire of length Land radius rigidly fixed at one end. On stretching the other end of the wire with a force F, the increase in its length is If another wire of same material but of length 2L and radius is stretched with a force 2F, the increase in its length will be

Young’s modulus

Since for same material Young’s modulus is same,

or

or

Since for same material Young’s modulus is same,

or

or

#### A wire of length Land radius rigidly fixed at one end. On stretching the other end of the wire with a force F, the increase in its length is If another wire of same material but of length 2L and radius is stretched with a force 2F, the increase in its length will be

physics-General

Young’s modulus

Since for same material Young’s modulus is same,

or

or

Since for same material Young’s modulus is same,

or

or

physics-

#### The variation of intensity of magnetization with respect to the magnetizing field (H) in a diamagnetic substance is described by the graph in figure.

For a dia-magnetic substance, is negative and Therefore, the variation is represented by . As magnetisation is small, is better choice.

#### The variation of intensity of magnetization with respect to the magnetizing field (H) in a diamagnetic substance is described by the graph in figure.

physics-General

For a dia-magnetic substance, is negative and Therefore, the variation is represented by . As magnetisation is small, is better choice.

Maths-

#### The number of one one onto functions that can be defined from A={a,b,c,d} into B={1,2,3,4} is

#### The number of one one onto functions that can be defined from A={a,b,c,d} into B={1,2,3,4} is

Maths-General

maths-

#### The number of ways one can arrange words with the letters of the word ’ so that ↑MADHURI↑ always vowels occupy the beginning, middle and end places is

3 vowels, 3 places ! remaining !

Total ! 4!

Total ! 4!

#### The number of ways one can arrange words with the letters of the word ’ so that ↑MADHURI↑ always vowels occupy the beginning, middle and end places is

maths-General

3 vowels, 3 places ! remaining !

Total ! 4!

Total ! 4!

Maths-

#### If defined by

#### If defined by

Maths-General

physics

#### An ant goes from P to Q on a circular path in 20 second Radius OP=10 m . What is the average speed and average velocity of it ?

#### An ant goes from P to Q on a circular path in 20 second Radius OP=10 m . What is the average speed and average velocity of it ?

physicsGeneral

Maths-

Which of the following functions is not injective?

Which of the following functions is not injective?

Maths-General

physics

#### The graph of position time shown in the figure for a particle is not possible because ....

#### The graph of position time shown in the figure for a particle is not possible because ....

physicsGeneral