ICSE-VIII-Physics
06: Heat Energy Class 8 Physics
- #30Describe an experiment to show that air expands on heating.Ans :
- Take a glass flat bottomed flask.
- Close its mouth with a cork having capillary tube containing indicator visible in the tube as shown.
- Make it air tight. Place the flask in hot water.
- After few minutes, we see the indicator moving up.
- This happens because air inside the flask expands with rise in temperature.
- This proves that gases expand on heating.
- Take a glass flat bottomed flask.