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

Discuss the work done in gravitational Field?

Ans 1:

Question # 3

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 # 4

How sunlight is directly converted into electricity by solar cells?

Ans 1: By using semiconductor devices,the solar cell also called photo voltaic cell, sunlight can be directly converted into electricity. These solar cells are made of silicon wafers. Electron in the silicon gain energy from sunlight to create a voltage. Voltage can be increased by increasing the number of solar cells.

Question # 5

Write some methods to obtain solar energy.

Ans 1: Solar energy can be used directly to heat water using large solar reflectors (mirrors) and thermal absorbers.
Semi-conductor devices called solar cells are used to convert sunlight into electricity. Solar cells are thin wafers made from silicon,
For cloudy days or nights, electric energy can be saved in Nickel cadmium batteries by connecting them to solar panels.

Question # 6

Name some non- conventional energy sources.

Ans 1: Some of the non-conventional energy sources are:
- Energy from tides
- Energy from waves
- Energy from biomass
- Energy from waste products
- Solar Energy
- Geothermal Energy

Question # 7

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

Ans 1:
A Moving car has kinetics energy .
A Compressed Spring has elastic potential energy.

Question # 8

Differentiate between geyser and aquifer.

Ans 1: Geyser isa hot spring that discharges steam and hot water, intermittently releasing an explosive column into the air

Aquifer is a layer of rock holding water that allows water to percolate through it with pressure.

Question # 9

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 # 10

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

Ans 1: It means that work has been done on the body by the force of 1 N which has lifted the body through a distance of 1 m.This work has been stored in the body in the form of P.E. Which is 1J.

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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 ?

Discuss the work done in gravitational Field?

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

How sunlight is directly converted into electricity by solar cells?

Write some methods to obtain solar energy.

Name some non- conventional energy sources.

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

Differentiate between geyser and aquifer.

How energy can be obtained from waste products?

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

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 ?

Discuss the work done in gravitational Field?

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

How sunlight is directly converted into electricity by solar cells?

Write some methods to obtain solar energy.

Name some non- conventional energy sources.

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

Differentiate between geyser and aquifer.

How energy can be obtained from waste products?

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

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

What is Salter's duck?

What do you mean by variable force?Give its two examples?

What are the essential conditions for conservative field?

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

Differentiate between geyser and aquifer.

Discuss the work-energy principal ?

How heat is generated within the Earth?

Discuss the work done in gravitational Field?

Write down two sources of energy which are renewable

A boy uses a catapult to throw a stone which accidentally smashes a greenhouse window.What energy changes are involved?

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

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

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

What is geothermal energy? How is it generated ?

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

Write some methods to obtain solar energy.

Define Kinetic energy ?

Discuss the work done in gravitational Field?

Differentiate between geyser and aquifer.

Name some non- conventional energy sources.

Explain briefly how the energy is obtained from the fermentation of biomass.

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

Discuss the work-energy principal ?

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

Differentiate between geyser and aquifer.

Define work and its SI unit.

What is 'Aquifer'?`

Define and explain work ?

What is solar constant ? What is its value?

What is Salter's duck?

Show that 1 kWh = 3.6x106J

How sunlight is directly converted into electricity by solar cells?

ICS Part 1 Physics Short Questions Test

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

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

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

Show that 1 kWh = 3.6x10⁶J