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9th Class Physics Chapter 7 Online Preparation
9th Class English Medium Subjects
9th Class Urdu Medium Subjects
Online Short Questions For Chapter 7 "9th Class Physics English Medium Chapter 7 Preparation "
Try The Short Questions For 9th Class Physics English Medium Chapter 7 Preparation
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Total Questions10
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Available Sets8
Physics (New Book) - 9th Class Physics English Medium Chapter 7 Preparation
Question # 1
Can we use a hydrometer to measure the density of milk?
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Ans 1:
Hydrometer is a device which is used to measure the density of liquids. So it can be used to measure the density of milk.
Prepare Complete Set Wise Questions For Chapter 7 "9th Class Physics English Medium Chapter 7 Preparation "
9th Class Physics English Medium Chapter 7 Preparation - Set 1
Question # 1
Can we use a hydrometer to measure the density of milk?
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Ans 1:
Hydrometer is a device which is used to measure the density of liquids. So it can be used to measure the density of milk.
9th Class Physics English Medium Chapter 7 Preparation - Set 2
Question # 1
What does it mean when the atmospheric pressure at place fall suddenly
- Ans 1: When the atmospheric pressure at place falls suddenly it indicate the windy and showery condition it may rain or storm at this place
9th Class Physics English Medium Chapter 7 Preparation - Set 3
Question # 1
It is easy to fill air in a balloon but it is difficult to remove air from a glass bottle.
- Ans 1: It is easy to fill are in a balloon we can enter air until pressure inside the balloon is equal to the atmospheric pressure. But it is difficult to remove air from glass bottle because inside the glass bottle air pressure is low and atmospheric pressure is high
9th Class Physics English Medium Chapter 7 Preparation - Set 4
Question # 1
State Archimedes principle.
- Ans 1: When a body is totally and partially immersed in the liquid the upthrust on it equal to the weight of liquid it displaces. Upthrust of liquid = pgV
9th Class Physics English Medium Chapter 7 Preparation - Set 5
Question # 1
State Archimedes principle.
- Ans 1: When a body is totally and partially immersed in the liquid the upthrust on it equal to the weight of liquid it displaces. Upthrust of liquid = pgV
9th Class Physics English Medium Chapter 7 Preparation - Set 6
Question # 1
What is meant by elasticity?
- Ans 1: The property of a body to restore its original size and shape as deforming force ceases to act is called elasticity
9th Class Physics English Medium Chapter 7 Preparation - Set 7
Question # 1
Explain how a submarine moves up the waters surface and down into water
- Ans 1: Submarine can also travel over and under water, when weight of water equal to its volume is greater than its weight. Submarine has a system of tanks. When tanks are filled of sea water, weight of submarine increases, As soon as weight of submarine become greater than upthrust of water, it dives into water and remains under water
9th Class Physics English Medium Chapter 7 Preparation - Set 8
Question # 1
Differentiate between strain and tensile srain.
- Ans 1: Tensile strain: A comparison of a change caused by the stress with original length is called tensile strain. The ratio of change in length to original length is called tensile strain.
- Ans 2: Formula Tensile strain= change in length/originallength
- Ans 3: Unit: Strain has no units as it is simply a ratio between shape caused by the stress is called as strain.
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