When a Bimetallic Bar Made of Copper and Iron Strips

question 14

Multiple Choice

When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. The reason for this is

• A)iron gets hotter before copper.
• B)copper gets hotter before iron.
• C)copper expands more than iron.
• D)iron expands more than copper.
• E)none of the above

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