Question

23. What is Venturi meter ? Mention any two devices which work on th
principle.
4. Explain the anomalous expansion of water ? When the densit​

Answer 1

Answer:

The anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4^o C4

o

C to 0^o C0

o

C and it becomes less dense.The density becomes less and less as it freezes because molecules of water normally form open crystal structures when in solid form