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

Write brief note on Einstein mass energy equation

Ans 1: Einstein predicted the interconversion of matter and energy. According to him, a loss in the mass of a body provides a lot of energy This happen in the nuclear reaction The reaction between the mass m and energy E is given by Einstein's mass energy equation
The above equation shows that tremendous amount of energy can be obtained from small quantity of matter It happens that matter is a highly concentrated form of energy

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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

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Set 11

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

Question # 1

Write brief note on Einstein mass energy equation

Ans 1: Einstein predicted the interconversion of matter and energy. According to him, a loss in the mass of a body provides a lot of energy This happen in the nuclear reaction The reaction between the mass m and energy E is given by Einstein's mass energy equation
The above equation shows that tremendous amount of energy can be obtained from small quantity of matter It happens that matter is a highly concentrated form of energy

Submit

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

Question # 1

Define kinetic energy also give its formula

Ans 1: The energy possessed by a body due to its motion is called kinetic energy

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

Question # 1

Write names of two renewable energy sources

Ans 1: Name of renewable energy sources are
Energy from water, Energy from the sun, Biomass, Wind energy, Geothermal energy sources.

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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

How solar energy can be converted directly into electricity

Ans 1: Solar energy can be converted directly into electricity by solar cells

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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

What two sources of non-renewable energy

Ans 1: Non-renewable: Those sources of energy which finish with continous use of these source are called source of non-renewable energy
Fossil fuels,Nuclear fuels
Ans 2: Non-renewable resources: The fossil fuels took millions of years for their formation So they are known as non-renewable resources
Ans 3: Example: Oil, Coal, Gas etc.

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

Question # 1

Give the uses of solar cells.

Ans 1: Solar cells are used in calculators, watches and toys.

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

Question # 1

What are solar panels.

Ans 1: Large number of solar cells are wired together to form solar panels

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

Question # 1

To construct such a working system whose efficiency is 100% is impossible Why

Ans 1: To construct such a working system, whose efficiency is 100% is impossible because every system meets energy losses due to friction that causes heat, noise etc These are not the useful form of energyh and go waste.

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

Question # 1

Give a example of the renewable energy source.

Ans 1: Sun light and water power are renewable energy source.

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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

Write brief note on Einstein mass energy equation

What is photo cell?

Define Elastic potential energy.

Name the five devices that convert electrical energy into mechanical energy

What are solar panels.

Define work. What is its SI unit.

Define chemical energy and write one method to obtain it

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

Define Work and Joule

Define gravitational potential 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

Write brief note on Einstein mass energy equation

What is photo cell?

Define Elastic potential energy.

Name the five devices that convert electrical energy into mechanical energy

What are solar panels.

Define work. What is its SI unit.

Define chemical energy and write one method to obtain it

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

Define Work and Joule

Define gravitational potential energy.

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

Define kinetic energy also give its formula

What is photo cell?

Give the uses of solar cells.

Why fossil fuels are called non- renewable source of energy?

How Biomass is used to obtain energy

What is Magma?

How can you find the efficiency of system

What is difference between kinetic Energy and potential Energy

How nuclear energy is obtained

What is meant by Geothermal energy

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

Write names of two renewable energy sources

When does a force work

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

What is Magma?

Differcreate between Mechanical energy and Sound energy

What is meant by efficiency of a system?

What is meant by Energy from Biomass

Define mechanical energy.

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

Define heat 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?

Write the bigger units of power.

Name the five devices that convert electrical energy into mechanical energy

Define energy, give two types of mechanical energy.

Define kinetic EnergyWrite its equation

What is Magma?

Define power and watt

How do we gain energy from air

Give a example of the renewable energy source.

What is photo cell

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

How solar energy can be converted directly into electricity