Physics-
General
Easy

Question

Twelve conducting rods form the riders of a uniform cube of side blank to the power of ´ end exponent l to the power of ´ end exponent. If in steady state, B and H ends of the rod are at 100°C and 0°C. Find the temperature of the junction 'A'

  1. 80°C    
  2. 60°C    
  3. 40°C    
  4. 70°C    

The correct answer is: 60°C

Related Questions to study

General
physics-

Three rods made of the same material and having same cross-sectional area but different lengths 10cm, 20 cm and 30 cm are joined as shown. The temperature of the joint is:

Three rods made of the same material and having same cross-sectional area but different lengths 10cm, 20 cm and 30 cm are joined as shown. The temperature of the joint is:

physics-General
General
physics-

Three conducting rods of same material and cross-section are shown in figure. Temperatures of A, D and C are maintained at 20°C, 90°C and 0°C. The ratio of lengths of BD and BC if there is no heat flow in AB is:

Three conducting rods of same material and cross-section are shown in figure. Temperatures of A, D and C are maintained at 20°C, 90°C and 0°C. The ratio of lengths of BD and BC if there is no heat flow in AB is:

physics-General
General
physics-

A ring consisting of two parts ADB and ACB of same conductivity k carries an amount of heat H. The ADB part is now replaced with another metal keeping the temperatures T1 and T2 constant. The heat carried increases to 2H. What should be the conductivity of the new ADB part? Given fraction numerator A C B over denominator A D B end fraction equals 3 colon

A ring consisting of two parts ADB and ACB of same conductivity k carries an amount of heat H. The ADB part is now replaced with another metal keeping the temperatures T1 and T2 constant. The heat carried increases to 2H. What should be the conductivity of the new ADB part? Given fraction numerator A C B over denominator A D B end fraction equals 3 colon

physics-General
parallel
General
physics-

Two sheets of thickness d and 2 d and same area are touching each other on their face. Temperature TA, TB, TC shown are in geometric progression with common ratio r = 2. Then ratio of thermal conductivity of thinner and thicker sheet are

Two sheets of thickness d and 2 d and same area are touching each other on their face. Temperature TA, TB, TC shown are in geometric progression with common ratio r = 2. Then ratio of thermal conductivity of thinner and thicker sheet are

physics-General
General
physics-

Heat is conducted across a composite block of two slabs of thickness d and 2d. Their thermal conductivities are 2k and k respectively. All the heat entering the face AB leaves from the face CD. The temperature in °C of the junction EF of the two slabs is :

Heat is conducted across a composite block of two slabs of thickness d and 2d. Their thermal conductivities are 2k and k respectively. All the heat entering the face AB leaves from the face CD. The temperature in °C of the junction EF of the two slabs is :

physics-General
General
physics-

The graph shown in the figure represent change in the temperature of 5 kg of a substance as it abosrbs heat at a constant rate of 42 kJ min–1 The latent heat of vapourazation of the substance is

The graph shown in the figure represent change in the temperature of 5 kg of a substance as it abosrbs heat at a constant rate of 42 kJ min–1 The latent heat of vapourazation of the substance is

physics-General
parallel
General
physics-

A solid material is supplied with heat at a constant rate. The temperature of material is changing with heat input as shown in the figure. What does slope DE represent

A solid material is supplied with heat at a constant rate. The temperature of material is changing with heat input as shown in the figure. What does slope DE represent

physics-General
General
General

In commercial electric motors the coil is wound on a _________ core.

In commercial electric motors the coil is wound on a _________ core.

GeneralGeneral
General
physics-

A thermally insulated vessel contains some water at 00C. The vessel is connected to a vacuum pump to pump out water vapour. This results in some water getting frozen. It is given Latent heat of vaporization of water at 0 to the power of ring operator end exponent C equals 21 cross times 10 to the power of 5 end exponent J divided by k g and latent heat of freezing of water equals 3.36 cross times 10 to the power of 5 end exponent J divided by k g. The maximum percentage amount of water that will be solidified in this manner will be

A thermally insulated vessel contains some water at 00C. The vessel is connected to a vacuum pump to pump out water vapour. This results in some water getting frozen. It is given Latent heat of vaporization of water at 0 to the power of ring operator end exponent C equals 21 cross times 10 to the power of 5 end exponent J divided by k g and latent heat of freezing of water equals 3.36 cross times 10 to the power of 5 end exponent J divided by k g. The maximum percentage amount of water that will be solidified in this manner will be

physics-General
parallel
General
physics-

Solids and liquids both expand on heating. The density of substance decreases on expanding according to the relation

when a solid is submerged in a liquid, liquid exerts an upward force on solid which is equal to the weight of liquid displaced by submerged part of solid. Solid will float or sink depends on relative densities of solid and liquid a cubical block of solid floats in a liquid with half of its volume submerged in liquid as shown in figure (at temperature T)

Imagine the depth of the block submerged in the liquid does not change on increasing temperature then

Solids and liquids both expand on heating. The density of substance decreases on expanding according to the relation

when a solid is submerged in a liquid, liquid exerts an upward force on solid which is equal to the weight of liquid displaced by submerged part of solid. Solid will float or sink depends on relative densities of solid and liquid a cubical block of solid floats in a liquid with half of its volume submerged in liquid as shown in figure (at temperature T)

Imagine the depth of the block submerged in the liquid does not change on increasing temperature then

physics-General
General
physics-

Solids and liquids both expand on heating. The density of substance decreases on expanding according to the relation

when a solid is submerged in a liquid, liquid exerts an upward force on solid which is equal to the weight of liquid displaced by submerged part of solid. Solid will float or sink depends on relative densities of solid and liquid A cubical block of solid floats in a liquid with half of its volume submerged in liquid as shown in figure (at temperature T)

Imagine fraction submerged does not change on increasing temperature the relation between gamma subscript L end subscriptL and alpha subscript S end subscript is

Solids and liquids both expand on heating. The density of substance decreases on expanding according to the relation

when a solid is submerged in a liquid, liquid exerts an upward force on solid which is equal to the weight of liquid displaced by submerged part of solid. Solid will float or sink depends on relative densities of solid and liquid A cubical block of solid floats in a liquid with half of its volume submerged in liquid as shown in figure (at temperature T)

Imagine fraction submerged does not change on increasing temperature the relation between gamma subscript L end subscriptL and alpha subscript S end subscript is

physics-General
General
physics-

Solids and liquids both expand on heating. The density of substance decreases on expanding according to the relation

when a solid is submerged in a liquid, liquid exerts an upward force on solid which is equal to the weight of liquid displaced by submerged part of solid. Solid will float or sink depends on relative densities of solid and liquid A cubical block of solid floats in a liquid with half of its volume submerged in liquid as shown in figure (at temperature T)

If temperature of system increases, then fraction of solid submerged in liquid

Solids and liquids both expand on heating. The density of substance decreases on expanding according to the relation

when a solid is submerged in a liquid, liquid exerts an upward force on solid which is equal to the weight of liquid displaced by submerged part of solid. Solid will float or sink depends on relative densities of solid and liquid A cubical block of solid floats in a liquid with half of its volume submerged in liquid as shown in figure (at temperature T)

If temperature of system increases, then fraction of solid submerged in liquid

physics-General
parallel
General
physics-

Solids and liquids both expand on heating. The density of substance decreases on expanding according to the relation

when a solid is submerged in a liquid, liquid exerts an upward force on solid which is equal to the weight of liquid displaced by submerged part of solid. Solid will float or sink depends on relative densities of solid and liquid A cubical block of solid floats in a liquid with half of its volume submerged in liquid as shown in figure (at temperature T)

The relation between densities of solid and liquid at temperature T is

Solids and liquids both expand on heating. The density of substance decreases on expanding according to the relation

when a solid is submerged in a liquid, liquid exerts an upward force on solid which is equal to the weight of liquid displaced by submerged part of solid. Solid will float or sink depends on relative densities of solid and liquid A cubical block of solid floats in a liquid with half of its volume submerged in liquid as shown in figure (at temperature T)

The relation between densities of solid and liquid at temperature T is

physics-General
General
physics-

A cuboid ABCDEFGH is anisotropic with alpha subscript x end subscript equals 1 cross times 10 to the power of negative 5 end exponent divided by blank to the power of ring operator end exponent C,alpha subscript y end subscript equals 2 cross times 10 to the power of negative 5 end exponent divided by blank to the power of ring operator end exponent C comma alpha subscript z end subscript equals 3 cross times 10 to the power of negative 5 end exponent divided by blank to the power of ring operator end exponent C. Coefficient of superficial expansion of faces can be

A cuboid ABCDEFGH is anisotropic with alpha subscript x end subscript equals 1 cross times 10 to the power of negative 5 end exponent divided by blank to the power of ring operator end exponent C,alpha subscript y end subscript equals 2 cross times 10 to the power of negative 5 end exponent divided by blank to the power of ring operator end exponent C comma alpha subscript z end subscript equals 3 cross times 10 to the power of negative 5 end exponent divided by blank to the power of ring operator end exponent C. Coefficient of superficial expansion of faces can be

physics-General
General
physics-

The load versus strain graph for four wires of the same material is shown in the figure. The thickest wire is represented by the line

The load versus strain graph for four wires of the same material is shown in the figure. The thickest wire is represented by the line

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.