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ICSE Class 9 Physics Question 6 of 16

Heat and Energy — Question 16

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Question 16

Some quantity of water at 0°C is heated to 20°С. Identify the correct graph showing the variation of volume of water with temperature.

Some quantity of water at 0°C is heated to 20°С. Identify the correct graph showing the variation of volume of water with temperature. Concise Physics Solutions ICSE Class 9.
Some quantity of water at 0°C is heated to 20°С. Identify the correct graph showing the variation of volume of water with temperature. Concise Physics Solutions ICSE Class 9.
Some quantity of water at 0°C is heated to 20°С. Identify the correct graph showing the variation of volume of water with temperature. Concise Physics Solutions ICSE Class 9.
Some quantity of water at 0°C is heated to 20°С. Identify the correct graph showing the variation of volume of water with temperature. Concise Physics Solutions ICSE Class 9.
Answer
Some quantity of water at 0°C is heated to 20°С. Identify the correct graph showing the variation of volume of water with temperature. Concise Physics Solutions ICSE Class 9.

option 4

Reason — As from 0°C to 4°C, water contracts so it's volume decreases as temperature increases, at 4°C water has maximum density and minimum volume and from 4°C to 20°C, water expands, i.e., volume increases as temperature increases.
So, the correct graph should show a decrease in volume from 0°C to 4°C and then an increase in volume from 4°C to 20°C. This forms a "U" shaped curve with the minimum point at 4°C.