ICS Part 1 Physics English Medium Chapter 4 Online Short Questions Test with Answers

Question # 1

Discuss the work-energy principal ?

Ans 1: Consider a body of mass 'm' placed on the ground. Now if some force 'F' is applied on the body, then the body will start motion with initial velocity V₁in the direction of applied force. If we neglect the force of friction then the body will continue its motion

Question # 2

A girl drops a cup from a certain height which breaks into pieces.What energy changes are involved?

Ans 1: When the cup was in the hands of girl, it had gravitational P.E when the cup is dropped, its P.E. Is converted into the K,E On striking the ground , this energy is converted into sound energy, heat, work done in breaking the cup into pieces and kinetic energy of pieces.

Question # 3

How heat is generated within the Earth?

Ans 1: Heat within the earth is generated by the following process.
1. Radioactive decay
2. Residual heat of the earth (usually within 10km of earth's surface).
3. Compression of material deep inside the earth.

Question # 4

How energy can be obtained from waste products?

Ans 1: Wate products like wood waste, crop residue, and municipal solid waste is burnt in a confined container. Heat produced in this way is directly utilized in the boiler to produce steam that can run turbine generator.

Question # 5

How can we gain energy from tides?

Ans 1: The tides raise the water in the sea roughly twice a day.If the water at the high tides is trapped in a basin by constructing a dam, then it is possible to use this as a source of energy. There dam is filled at high tide and water is released in a controlled way at low tide to drive the turbines and generate electricity.

Question # 6

Define kilowatt hour (kWh).

Ans 1: Kilowatt hour is the work done in one hour by an agency whose power is one kilowatt.
1 kWh = 3.6x10⁶

Question # 7

What is Salter's duck?

Ans 1: Salter's duck is a device which can be used to utilize the water waves energy and to generate electricity .It consists of two parts
1. Duck float
2. Balance float
The wave energy makes duck float move relative to the balance float. The relative motion of the duck float is then used to run electricity generators.

Question # 8

What is a machine ? Discuss the input and output and efficiency of a mechanical machine ?

Ans 1: Machine:A machine is a thing or device with the help of which we can do more work than we can do by hands.
Input of Mechanical machine:The amount of work dine on a machine by a given effort force is known as input of machine.
Input = effort *effort arm
Input = P*d
Output of Mechanical Machine:The amount of work done by a machine on the load (weight) is known as output of the machine
output = load * load arm
output = w*d
Efficiency:The ratio of output and input of a machine is known as efficiency
Efficiency:Output / input
n = w*d/ p*d

Question # 9

A person holds a bag of groceries while standing still. A car is stationary with its engine running.How are the two situations similar from the point of view of work ?

Ans 1: In both the above two cases, since there is no displacement, therefore the work done will be zero. Hence in this respect, the two situation are similar.

Question # 10

What sort of energy is in the following?
(A) Compressed spring (b) Water in high dam

Ans 1: a) A compressed spring has Elastic Potential Energy stored in it.
B) Water in a high dam has Gravitational potential Energy in it.

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ICS Part 1 Physics English Medium Chapter 4 Online Short Questions Test with Answers

Online Short Questions For Chapter 4 "ICS Part 1 Physics Chapter 4 Short Questions Test "

Physics - ICS Part 1 Physics Chapter 4 Short Questions Test

Discuss the work-energy principal ?

A girl drops a cup from a certain height which breaks into pieces.What energy changes are involved?

How heat is generated within the Earth?

How energy can be obtained from waste products?

How can we gain energy from tides?

Define kilowatt hour (kWh).

What is Salter's duck?

What is a machine ? Discuss the input and output and efficiency of a mechanical machine ?

A person holds a bag of groceries while standing still. A car is stationary with its engine running.How are the two situations similar from the point of view of work ?

What sort of energy is in the following?(A) Compressed spring (b) Water in high dam

Prepare Complete Set Wise Questions For Chapter 4 "ICS Part 1 Physics Chapter 4 Short Questions Test "

Set 1

Set 2

Set 3

Set 4

ICS Part 1 Physics Chapter 4 Short Questions Test - Set 1

Discuss the work-energy principal ?

A girl drops a cup from a certain height which breaks into pieces.What energy changes are involved?

How heat is generated within the Earth?

How energy can be obtained from waste products?

How can we gain energy from tides?

Define kilowatt hour (kWh).

What is Salter's duck?

What is a machine ? Discuss the input and output and efficiency of a mechanical machine ?

A person holds a bag of groceries while standing still. A car is stationary with its engine running.How are the two situations similar from the point of view of work ?

What sort of energy is in the following?(A) Compressed spring (b) Water in high dam

ICS Part 1 Physics Chapter 4 Short Questions Test - Set 2

A person holds a bag of groceries while standing still. A car is stationary with its engine running.How are the two situations similar from the point of view of work ?

Describes four uses of solar cells.

What is conservation field ? Give example . (OR) Loop?

What is a machine ? Discuss the input and output and efficiency of a mechanical machine ?

How many most common methods can be used for the conversion of biomass into fuel? Write their names.

Define energy ? write the units of energy?

Discuss the work done by a variable force ?

An object has one joule of potential energy.Explain what it means.

How energy is obtained from direct combustion and fermentation.

What is solar constant ? What is its value?

ICS Part 1 Physics Chapter 4 Short Questions Test - Set 3

An object has one joule of potential energy.Explain what it means.

What is 'Aquifer'?`

Discuss the work done by a variable force ?

Define Kinetic energy ?

Explain briefly about residual heat of the earth.

How heat is generated within the Earth?

What are non-conventional energy sources? Describe briefly.

How energy can be obtained from waste products?

Name some non- conventional energy sources.

Discuss the work done in gravitational Field?

ICS Part 1 Physics Chapter 4 Short Questions Test - Set 4

What sort of energy is in the following?A Moving CarA Compressed Spring

What are the essential conditions for conservative field?

Show that work done in a gravitational Field is independent of the path ?

Write some methods to obtain solar energy.

Name at least two renewable and two non-renewable energy sources.

How energy is obtained from direct combustion and fermentation.

How sunlight is directly converted into electricity by solar cells?

How energy can be obtained from waste products?

Define Kinetic energy ?

Define conservative and non-conservative fields?

ICS Part 1 Physics Short Questions Test

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What sort of energy is in the following?
(A) Compressed spring (b) Water in high dam

What sort of energy is in the following?
(A) Compressed spring (b) Water in high dam

What sort of energy is in the following?
A Moving Car
A Compressed Spring