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Physics Chapter 7 Long Questions
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9th Class Physics Chapter 7 Long Questions Notes
- How kinetic molecular model of matter is helpful in differentiating various states of matter?
- Does there exist a fourth state of matter? What is that?
- What is meant by density? What is its SI unit?
- Can we use a hydrometer to measure the density of milk?
- Define the term pressure.
- Show that the atmosphere exerts pressure.
- It is easy to remove air from a balloon but it is very difficult to remove air from a glass bottle. Why?
- What is a barometer?
- Why water is not suitable to be used in a barometer?
- What makes a sucker pressed on a smooth wall sticks to it?
- Why does the atmospheric pressure vary with height?
- What does it mean when the atmospheric pressure at a place falls suddenly?
- What changes are expected in weather if the barometer reading shows a sudden increase?
- State Pascal’s law.
- Explain the working of a hydraulic press.
- What is meant by elasticity?
- State Archimedes principle.
- What is upthrust? Explain the principle of floatation.
- Explain how a submarine moves up the water’s surface and down into the water.
- Why does a piece of stone sink in water but a ship with a huge weight floats?
- What is Hooke’s law? What is meant by elastic limit?
- Take a rubber band. Construct a balance of your own using a rubber band. Check its accuracy by weighing various objects.
Class 9 Physics Chapter 7 Long Questions PDF Download
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