9th Class Physics English Medium Chapter 6 Work and Energy Online Short Questions Preparation

9th Class Physics Chapter 6 Online Preparation

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Online Short Questions For Chapter 6 "9th Class Physics English Medium Chapter 6 Preparation "

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Total Questions10
Available Sets11

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Physics (New Book) - 9th Class Physics English Medium Chapter 6 Preparation

Question # 1

Define gravitational potential energy.

Ans 1: Gravitational potential energy possessed due to height of the body is called gravitational potential energy. G.P.E.= mgh Example: The energy store in dam water.

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Prepare Complete Set Wise Questions For Chapter 6 "9th Class Physics English Medium Chapter 6 Preparation "

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Set 3

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Set 4

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Set 5

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Set 6

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Set 7

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Set 8

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Set 9

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Set 10

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Set 11

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9th Class Physics English Medium Chapter 6 Preparation - Set 1

Question # 1

Define gravitational potential energy.

Ans 1: Gravitational potential energy possessed due to height of the body is called gravitational potential energy. G.P.E.= mgh Example: The energy store in dam water.

Submit

9th Class Physics English Medium Chapter 6 Preparation - Set 2

Question # 1

What is meant by efficiency of a system?

Ans 1: Efficiency of a system is the ratio of required form of energy obtained from a system as output to the total energy given to it as input. Formula: Efficiency = Required form of output/total input energy

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9th Class Physics English Medium Chapter 6 Preparation - Set 3

Question # 1

Why do we need energy

Ans 1: Energy: A body possesses energy if it is capable to do work
Ans 2: We Need Energy: We need energy toi perform various activities in our daily life

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9th Class Physics English Medium Chapter 6 Preparation - Set 4

Question # 1

A cyclist does 12 joules of useful work while pedaling his bike from every 100 joules of food energy which he takes. What is his efficiency?

Ans 1: W= 12J
E= 100 J
Efficiency = 12J/100J
= 0.12
% Efficiency = 0.12 x100
= 12%

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9th Class Physics English Medium Chapter 6 Preparation - Set 5

Question # 1

Define unit of work

Ans 1: Unit of work is joule (J)
Amount of work is one joule when a force of one newton displace a body through one meter in the direction of force

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9th Class Physics English Medium Chapter 6 Preparation - Set 6

Question # 1

Define work. What is its SI unit.

Ans 1: Work: work is done when a force acting on a body displaces it in the direction it in the direction of force. W = Force x displacement w= F.S Unit: Its unit is newton meter or joule.

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9th Class Physics English Medium Chapter 6 Preparation - Set 7

Question # 1

Define kinetic EnergyWrite its equation

Ans 1: Kinetic Energy:
The energy possessed by a body due to its motion is called its kinetic energy.
K.E =1/2 mv²

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9th Class Physics English Medium Chapter 6 Preparation - Set 8

Question # 1

What is meant by bio mass energy?

Ans 1: Biomass is plant or animal wastes that can be that can be burnt as fuel. Other forms of biomass are garbage, farm wastes, sugarcane and other plants. The energy obtained from biomass is called biomass energy.

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9th Class Physics English Medium Chapter 6 Preparation - Set 9

Question # 1

When does a force work

Ans 1: In physics, work is done when a force acts on a body and moves it in the direction of the force
Ans 2: Explain: According to formula the work will be zero and IF work will also zero

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9th Class Physics English Medium Chapter 6 Preparation - Set 10

Question # 1

Define power and watt

Ans 1: Power: The rate of doing work
Ans 2: Formula: p= work done/Time taken
P=w/t
Ans 3: Quantity: power is a Scalar quantity
power SI unit of power is watt
Watt: The power of a body is one watt if it does work
Large units of power

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9th Class Physics English Medium Chapter 6 Preparation - Set 11

Question # 1

Write two uses of wind energy

Ans 1: Uses of wind energy
Wind energy has powered sailing ships across the oceans
Wind energy has been used by windmills to rind grain and pump water

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6th Unit

9th class Physics Chapter 6 (English Medium)

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Matric Part 1/9th Class Physics Chapter 6 Short Question Test With Answer for Unit 6 Work and Energy

9th Class English Medium Subjects

9th Class Urdu Medium Subjects

Online Short Questions For Chapter 6 "9th Class Physics English Medium Chapter 6 Preparation "

Physics (New Book) - 9th Class Physics English Medium Chapter 6 Preparation

Define gravitational potential energy.

Define unit of work.

Write uses of energy, pollute our environment?

How nuclear energy is obtained

Why fossil fuels are called non-renewable form of energy

Define work. Write formula and unit.

Define unit of work

Write down two ases of thermal pollution.

How is energy converted from one form to another

Write two disadvantages of thermal pollution

Prepare Complete Set Wise Questions For Chapter 6 "9th Class Physics English Medium Chapter 6 Preparation "

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7

Set 8

Set 9

Set 10

Set 11

9th Class Physics English Medium Chapter 6 Preparation - Set 1

Define gravitational potential energy.

Define unit of work.

Write uses of energy, pollute our environment?

How nuclear energy is obtained

Why fossil fuels are called non-renewable form of energy

Define work. Write formula and unit.

Define unit of work

Write down two ases of thermal pollution.

How is energy converted from one form to another

Write two disadvantages of thermal pollution

9th Class Physics English Medium Chapter 6 Preparation - Set 2

What is meant by efficiency of a system?

What is difference between kinetic Energy and potential Energy

Define elastic potential energy

Give example of the renewable energy source

Write the uses of wind energy

Define watt.

Write brief note on Einstein mass energy equation

Name such a device that converts mechanical energy into electrical energy

Name the device that converts mechanical energy into electrical energy.

Name the five devices that convert electrical energy into mechanical energy.

9th Class Physics English Medium Chapter 6 Preparation - Set 3

Why do we need energy

What is soil erosion

On what parts a heating system consist of

How nuclear energy is obtained

How solar energy can be converted directly into electricity

What is photo cell?

Give purposes of solar panels

Differcreate between Mechanical energy and Sound energy

Write two uses of wind energy

A body of mass 50 kg is raised to a height of 3m what is its potential energy?

9th Class Physics English Medium Chapter 6 Preparation - Set 4

A cyclist does 12 joules of useful work while pedaling his bike from every 100 joules of food energy which he takes. What is his efficiency?

How solar energy can be converted directly into electricity?

What is Magma?

Write uses of energy, pollute our environment?

Define mechanical energy.

Define efficiency and write its equation

Why fossil fuels are called non-renewable form of energy

Why output energy is always less than the input energy

Which form of energy is most preferred and why

What is meant by term power?

9th Class Physics English Medium Chapter 6 Preparation - Set 5

Define unit of work