Which rod expands more hollow or solid?

When two identical rods are heated to the same rise in temperature, the solid rod will expand more. As more number of molecules are present in the solid rod so, more heat energy is present in the solid rod.

What material has the greatest thermal expansion?

The coefficient for aluminum is 2.4, twice that of iron or steel. This means that an equal temperature change will produce twice as much change in the length of a bar of aluminum as for a bar of iron. Lead is among the most expansive solid materials, with a coefficient equal to 3.0.

Will the expansion of a hollow and a solid cylinder of the same size and material be the same if they are heated to the same temperature?

If the two bodies of the same material have the same external dimensions and appearance, overall volume expansion of hollow is greater than solid body because for same volume, expansion depends on rise in temperature and the temperature of hollow body is greater due to greater mass of solid body. Both will expand same.

Why a longer rod expands more than a shorter rod on being heated to the same temperature?

A longer rod expands more than a shorter rod on being heated to the same temperature because the intermolecular distance increases by same amount in both of them. Therefore, greater expansion is seen in longer rod.

When we heat two equal rods one is hollow and other is solid of the same metal to the same rise in temperature?

Q22) Two identical rods – one hollow and the other solid, are heated to the same rise in temperature. Which will expand more? Solution: When two identical rods are heated at the same temperature, they will expand by the same amount on heating as the material of the rods are the same.

Which is the better conductor of heat a solid rod of copper or a hollow rod of copper of the same length and diameter?

… of same dimensions, copper is a better conductor of heat as rods are of equal lengths (4) X is better conductor of heat … a rod of same length, same material, same outer diameter are …

Which has more thermal expansion and why?

The thermal expansion of liquids is usually higher than in solids because the intermolecular forces present in liquids are relatively weak and its constituent molecules are more mobile.

What is thermal expansion example?

The expansion of alcohol in a thermometer is one of many commonly encountered examples of thermal expansion, the change in size or volume of a given mass with temperature. Railroad tracks and bridges, for example, have expansion joints to allow them to freely expand and contract with temperature changes.

Which will expand more on heating solid sphere or hollow sphere?

Hollow sphere contains air inside it and the coefficient of expansion of air is greater than solids. Therefore, the hollow sphere will expand more than the solid sphere.

Which expands the greatest when heated at the same temperature?

Heat | Short/Long Answer Questions Q28) State which expands more, when heated to the same temperature: solid, liquid or gas? Solution: Gases expand much more than the liquid and the solids. Like liquids, the gases do not have a definite shape, so they also have only the cubical expansion.

Does alcohol expand more than water?

water expands more than alcohol.

Which of the following will expand more when heated to the same temperature solid liquid or gas?

gas will expand more when heated to the same temperature as its molecules are not packed where as solid molecules are packed and liquid molecules are more packed as compared to gas.

Why is a hollow tube easier to break than a rod?

Which is obvious from common sense point of view: thin rod is easier to deform than the hollow tube (of the same mass ), but as long as the hollow tube starts to deform it is easier to break. A hollow tube of the same diameter as the solid round bar would have a larger radius of gyration hence your hazy recollection.

What are the different types of thermal expansion?

Depending on the type of expansion thermal expansion is of 3 types: Linear expansion is the change in length due to heat. Linear expansion formula is given as, Volume expansion is the change in volume due to temperature. Volume expansion formula is given as

What is the coefficient of thermal expansion of a solid?

If the bar is cooled, then the expansion is negative (a contraction). If you need the increase in volume of a solid, where V is the volume and beta is the volumetric coefficient of thermal expansion. e.g. mm/ (mm-deg C). If the bar is cooled, then the expansion is negative (a contraction).

What is the difference between a hollow and a thin rod?

Where ‘strong’ is compared with the tube wall thickness. Which is obvious from common sense point of view: thin rod is easier to deform than the hollow tube (of the same mass ), but as long as the hollow tube starts to deform it is easier to break.