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Physics

Grade-9

Easy

Question

Given below is a table showing the values of the coefficients of thermal expansions of some materials. Answer the question based on the table.
A bronze and a silver rod are heated to increase their temperatures by the same amounts. Which of them would expand more?

Substance Coefficient of Expansion Per Degree Centigrade

$text Aluminium end text$ $25 cross times 10 to the power of negative 6 end exponent$

$text Brass or Bronze end text$ $19 cross times 10 to the power of negative 6 end exponent$

$text Brick end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Copper end text$ $17 cross times 10 to the power of negative 6 end exponent$

$text Glass (Plate) end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Glass (Pyrex) end text$ $3 cross times 10 to the power of negative 6 end exponent$

$text Iron or Steel end text$ $11 cross times 10 to the power of negative 6 end exponent$

$text Lead end text$ $29 cross times 10 to the power of negative 6 end exponent$

$text Quartz end text$ $0.4 cross times 10 to the power of negative 6 end exponent$

$text Silver end text$ $19 cross times 10 to the power of negative 6 end exponent$

Both would expand equally
Bronze
Silver
None

hint Hint:

Expansion is directly propotional to Coefficient of linear expansion

The correct answer is: Both would expand equally

When two identical rods (same length ) are of different material and heated to same rise in temperature, the bronze rod and silver rod will expand equally , since expansion depends on nature of material.

(Coefficient of linear expansion of bronze=silver)

Related Questions to study

Given below is a table showing the values of the coefficients of thermal expansions of some materials. Answer the question based on the table.
Sagar is provided with a brass rod and a lead rod of identical dimensions. He heats the rods through the same temperature increase. Which rod would expand more?

Substance Coefficient of Expansion Per Degree Centigrade

$text Aluminium end text$ $25 cross times 10 to the power of negative 6 end exponent$

$text Brass or Bronze end text$ $19 cross times 10 to the power of negative 6 end exponent$

$text Brick end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Copper end text$ $17 cross times 10 to the power of negative 6 end exponent$

$text Glass (Plate) end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Glass (Pyrex) end text$ $3 cross times 10 to the power of negative 6 end exponent$

$text Iron or Steel end text$ $11 cross times 10 to the power of negative 6 end exponent$

$text Lead end text$ $29 cross times 10 to the power of negative 6 end exponent$

$text Quartz end text$ $0.4 cross times 10 to the power of negative 6 end exponent$

$text Silver end text$ $19 cross times 10 to the power of negative 6 end exponent$

Given below is a table showing the values of the coefficients of thermal expansions of some materials. Answer the question based on the table.
Sagar is provided with a brass rod and a lead rod of identical dimensions. He heats the rods through the same temperature increase. Which rod would expand more?

Substance Coefficient of Expansion Per Degree Centigrade

$text Aluminium end text$ $25 cross times 10 to the power of negative 6 end exponent$

$text Brass or Bronze end text$ $19 cross times 10 to the power of negative 6 end exponent$

$text Brick end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Copper end text$ $17 cross times 10 to the power of negative 6 end exponent$

$text Glass (Plate) end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Glass (Pyrex) end text$ $3 cross times 10 to the power of negative 6 end exponent$

$text Iron or Steel end text$ $11 cross times 10 to the power of negative 6 end exponent$

$text Lead end text$ $29 cross times 10 to the power of negative 6 end exponent$

$text Quartz end text$ $0.4 cross times 10 to the power of negative 6 end exponent$

$text Silver end text$ $19 cross times 10 to the power of negative 6 end exponent$

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Glass containers may crack when a hot liquid is suddenly poured into them because ____.

Olive oil is cooled in the freezer. What happens to the kinetic energy of its particles? What does it lead to?

Olive oil is cooled in the freezer. What happens to the kinetic energy of its particles? What does it lead to?

parallel

When the temperature of a substance decreases, it ____.

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Water is heated on a burner. What happens to the kinetic energy of its particles? What does it lead to?

The coefficient of thermal expansion of metals is usually _____ the non-metals.

The coefficient of thermal expansion of metals is usually _____ the non-metals.

parallel

When the temperature of a liquid increases, its particles ____.

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When the temperature of a solid increases, its particles _____.

When the temperature of a solid increases, its particles _____.

When a thermometer is dipped in a tumbler of cool water, its mercury level comes down. This is due to ____.

When a thermometer is dipped in a tumbler of cool water, its mercury level comes down. This is due to ____.

parallel

When the temperature of a substance increases, it ____.

When the temperature of a substance increases, it ____.

As a result of thermal expansion, liquids experience a change in _____.

As a result of thermal expansion, liquids experience a change in _____.

Thermal expansion occurs in _____.

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parallel

In order to maintain the temperature of an isothermal system constant, ____.

In order to maintain the temperature of an isothermal system constant, ____.

The picture below represents an ______ process.

The picture below represents an ______ process.

The picture below represents an ______ process.

The picture below represents an ______ process.

parallel

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