b) on heating depends. Observe the given picture and answer the questions that follow. IRON STRIP 2 BRASS STRIP d. 3 i) 23. Before heating (b) Alter heating Why does the strip bend? Which phenomenon is involved in it? Why does the strip bend upwards?
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Answer:1. Due to excess heat it expands and bent of other side
2. Thermal expansion
3. the strip bends upwards because the brass strip expanded more than iron strip so more the strip expanded more it get curved on opposite side (coefficient of linear expansion of brass is more than that of iron)
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