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

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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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 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

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

Submit

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

Question # 1

Define Walt

Ans 1: Walt The SI unit of power is Walt One Watt is power of a device which does 1 j of work in 1 sec

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

Question # 1

How nuclear energy is obtained

Ans 1: Nuclear Energy: It is a form of energy which is released from the nucleus due to nuclear reactions such as fission or fusion reactions

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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

Define Work and Joule

Ans 1: Work: Work is done when a force acting on a acting on a body displace it in the direction of a force
Ans 2: Formula w=fs
Unit: Sl unit of work is joule
Ans 3: Joule The amount of work is one joule when a force of one newton displace a body through one metre in the one newton displaces a body through one metre in the direction of force
Ans 4: Mathematical equation 1j=1n*1m

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

Question # 1

What is meant by Geothermal energy

Ans 1: Geothermal energy: In some part of word the Earth provides us hot water from geysers and hot springs There is hot molten part deep in the Earth is called magma. Water reaching close to the magma changes to steam due to high temperature of megma This energy is called geothermal energy

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

Question # 1

Define elastic potential energy

Ans 1: 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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9th Class Physics English Medium Chapter 6 Preparation - Set 8

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 9

Question # 1

Where and why catalytic converter is to be used

Ans 1: New cars have catalytic converters, These devices convert some polluting gases.

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

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 11

Question # 1

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

Ans 1: 1- Electric Motor
2- Electric Fan
3- Elevator
4- Drill machine
5- Grinder Sewing machine

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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

How can you find the efficiency of system

A crate is moved by pulling, with mass the attached to it.

What is photo cell?

Why fossil fuels are called non-renewable form of energy

What two sources of non-renewable energy

Define unit of work

State law of conservation of energy

How nuclear energy is obtained

Which form of energy is most preferred and why

Define Walt

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

How can you find the efficiency of system

A crate is moved by pulling, with mass the attached to it.

What is photo cell?

Why fossil fuels are called non-renewable form of energy

What two sources of non-renewable energy

Define unit of work

State law of conservation of energy

How nuclear energy is obtained

Which form of energy is most preferred and why

Define Walt

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

Define Walt

Define Kinetic energy, also give its formula.

Define work. What is its SI unit.

Define kinetic energy also give its formula

Define mechanical energy.

On what parts a heating system consist of

Define unit of work

Define geothermal energy and elastic potential energy

When does a force do work? Explain.

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?

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

How nuclear energy is obtained

What are effects of fossil fuels on human health

Name such a device that converts mechanical energy into electrical energy

Prove that

A crate is moved by pulling, with mass the attached to it.

Define gravitational potential energy.

Define watt.

Differentiate between electrical energy and light

Write the bigger units of power

Define work and energy

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

Define potential energy and write its formula

Name the device that converts mechanical energy into electrical energy.

Name two devices that convert electrical energy into mechanical energy

Define gravitational potential energy.

Give the use of solar cell

What is meant by Nuclear Energy

How is energy produced from nuclear fuels

Why do we need energy

Define energy, give two types of mechanical energy.

What is difference between kinetic Energy and potential Energy

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

Define Work and Joule