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

Question # 1

When does a force do work? Explain.

Ans 1: When force acts on the body and body covers some distance in the direction of force then we said force do work.

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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 2

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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

10 Questions
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Set 11

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

Question # 1

When does a force do work? Explain.

Ans 1: When force acts on the body and body covers some distance in the direction of force then we said force do work.

Submit

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

Question # 1

What is photo cell

Ans 1: A solar cell also called photo cell is made from silicon wafer. When sunlight falls on a solar cell it converts the light directly into electrical energy.

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

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 4

Question # 1

Define potential energy and write its formula

Ans 1: Potential energy: The energy possessed by a bogy due to tis position is known as its potential energy

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

Question # 1

Why output energy is always less than the input energy

Ans 1: The energy in required form obtained from a working system is always less than the energy given to it us input Because every system meet energy losses due to friction in the form of heat noise etc

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

Question # 1

Name the device that converts mechanical energy into electrical energy.

Ans 1: Generator is a device which converts mechanical energy into electrical energy.

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

Question # 1

How can you find the efficiency of 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
We can find the efficiency of a system by following formula

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

Question # 1

Write the bigger units of power

Ans 1: Bigger Units bigger units of power: Bigger of power are kilowatt (kw), megawatt (MW) horse power The relation between them is as follow

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

Question # 1

Mechanical energy can be converted in heat energy

Ans 1: Explain with an example: By rubbing hands quickly these will be warmed Its means b rubbing hand muscular energy is used and as a result heat is produced, In this process of rubbing hands mechanical energy is converted into heat energy

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

Question # 1

Define energy give two types of mechanical energy

Ans 1: Energy: A body possesses energy if it is carpetable to do work
Ans 2: Unit: Its unit s joule
Ans 3: Quantity: It is scalar quantity
Types of Mechanical Energy: There are two types of mechanical energy
Kinetic energy
Potential energy

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

Question # 1

Define Elastic potential energy.

Ans 1: Elastic potential energy: The energy possessed due to stretched position in a body is called elastic potential energy. It is stored potential energy in compressed spring.

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Physics

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

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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

When does a force do work? Explain.

Define energy, give two types of mechanical energy.

Define kinetic energy and write tis equation

Why output energy is always less than the input energy

Define power and watt

Mechanical energy converts into heat energy give its example

Give a example of the renewable energy source.

How much work is done when a body moves with uniform velocity?

What is meant by Nuclear Energy

Why do we need energy

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

When does a force do work? Explain.

Define energy, give two types of mechanical energy.

Define kinetic energy and write tis equation

Why output energy is always less than the input energy

Define power and watt

Mechanical energy converts into heat energy give its example

Give a example of the renewable energy source.

How much work is done when a body moves with uniform velocity?

What is meant by Nuclear Energy

Why do we need energy

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

What is photo cell

Mechanical energy converts into heat energy tive its example.

What is meant by term power?

Write down the name of two nuclear reactions

Define kinetic energy also give its formula

Write the bigger units of power.

Prove that

What is meant by chemical energy

Mechanical energy can be converted in heat energy

How is energy converted from one form to another

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

Define kinetic EnergyWrite its equation

What are solar panels

What is meant by efficiency of a system?

What is difference between kinetic Energy and potential Energy

Where and why catalytic converter is to be used

Write the bigger units of power.

Write down two ases of thermal pollution.

Define work. Write formula and unit.

Give a example of the renewable energy source.

Write names of two non-renewable and renewable sources of energy

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

Define potential energy and write its formula

Define Kinetic energy, also give its formula.

What two sources of non-renewable energy

Define potential energy, also give its formula.

Write uses of energy, pollute our environment?

Write down the two disadvantages of fossil fuels

Mechanical energy converts into heat energy tive its example.

How much power is used by a 40Kg athleteby climbing 10m high ladder in 10s

Write brief note on Einstein mass energy equation

Define geothermal energy and elastic potential energy

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

Why output energy is always less than the input energy