All Courses
Get the App Signup / Login
Sign in Open App
Class 9 Exam  >  Class 9 Tests  >  Physics for Class 9  >  Test: Work and Energy- Case Based Type Questions- 2 - Class 9 MCQ

Test: Work and Energy- Case Based Type Questions- 2 - Class 9 MCQ


Test Description

10 Questions MCQ Test Physics for Class 9 - Test: Work and Energy- Case Based Type Questions- 2

Test: Work and Energy- Case Based Type Questions- 2 for Class 9 2024 is part of Physics for Class 9 preparation. The Test: Work and Energy- Case Based Type Questions- 2 questions and answers have been prepared according to the Class 9 exam syllabus.The Test: Work and Energy- Case Based Type Questions- 2 MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Work and Energy- Case Based Type Questions- 2 below.
Solutions of Test: Work and Energy- Case Based Type Questions- 2 questions in English are available as part of our Physics for Class 9 for Class 9 & Test: Work and Energy- Case Based Type Questions- 2 solutions in Hindi for Physics for Class 9 course. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free. Attempt Test: Work and Energy- Case Based Type Questions- 2 | 10 questions in 20 minutes | Mock test for Class 9 preparation | Free important questions MCQ to study Physics for Class 9 for Class 9 Exam | Download free PDF with solutions
Test: Work and Energy- Case Based Type Questions- 2 - Question 1
Save

Direction: Study the given passage and answer the following questions .

The following diagram shows that a simple pendulum consisting of a bob of mass 100 gm. Initially the bob of the pendulum is at rest at ‘O’. It is then displaced to one side at A. The height of ‘A’ above ‘O’ is 5 cm. (Take g = 10 m/s2)

Q. What is the value of potential energy of bob at ‘A’ and where does it come from?

Detailed Solution for Test: Work and Energy- Case Based Type Questions- 2 - Question 1
PE = mgh = 0.1 x 10 x 5 x 10-2 = 0.05 J

The work done in raising the bob through a height of 5 cm (against the gravitational attraction) gets stored in the bob in the form of its potential energy.

Test: Work and Energy- Case Based Type Questions- 2 - Question 2
Save

Direction: Study the given passage and answer the following questions .

The following diagram shows that a simple pendulum consisting of a bob of mass 100 gm. Initially the bob of the pendulum is at rest at ‘O’. It is then displaced to one side at A. The height of ‘A’ above ‘O’ is 5 cm. (Take g = 10 m/s2)

Q. What is the value of kinetic energy of the bob at mean position ‘O’?

Detailed Solution for Test: Work and Energy- Case Based Type Questions- 2 - Question 2
At mean position, potential energy is zero, Hence K.E. at O = 0.05 J
1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Work and Energy- Case Based Type Questions- 2 - Question 3
Save

Direction: Study the given passage and answer the following questions .

The following diagram shows that a simple pendulum consisting of a bob of mass 100 gm. Initially the bob of the pendulum is at rest at ‘O’. It is then displaced to one side at A. The height of ‘A’ above ‘O’ is 5 cm. (Take g = 10 m/s2)

Q. What is the value of total energy of the bob at position A?

Detailed Solution for Test: Work and Energy- Case Based Type Questions- 2 - Question 3
At position A, PE = 0.05 J, KE = 0

So, Total energy = 0.05 J

Test: Work and Energy- Case Based Type Questions- 2 - Question 4
Save

Direction: Study the given passage and answer the following questions .

The following diagram shows that a simple pendulum consisting of a bob of mass 100 gm. Initially the bob of the pendulum is at rest at ‘O’. It is then displaced to one side at A. The height of ‘A’ above ‘O’ is 5 cm. (Take g = 10 m/s2)

Q. What is kinetic energy?
Detailed Solution for Test: Work and Energy- Case Based Type Questions- 2 - Question 4
Kinetic energy is the energy of motion, observable as the movement of an object, particle, or set of particles. Any object in motion is using kinetic energy: a person walking, a thrown baseball, a crumb falling from a table, and a charged particle in an electric field are all examples of kinetic energy at work.
Test: Work and Energy- Case Based Type Questions- 2 - Question 5
Save

Direction: Study the given passage and answer the following questions .

The following diagram shows that a simple pendulum consisting of a bob of mass 100 gm. Initially the bob of the pendulum is at rest at ‘O’. It is then displaced to one side at A. The height of ‘A’ above ‘O’ is 5 cm. (Take g = 10 m/s2)

Q. What is the value of kinetic energy and potential energy of the bob at the position ‘P’ whose height above O is 2 cm?
Detailed Solution for Test: Work and Energy- Case Based Type Questions- 2 - Question 5
PE at P = mgh = 0.1 x 10 x 2 x 10-2 = 0.02 J

K.E = Total energy - PE = 0.05-0.02 = 0.03 J

Test: Work and Energy- Case Based Type Questions- 2 - Question 6
Save

Study the given passage and answer any four questions.

In the month of September, four devices of power 100 W each is used for 10 hours daily.

Q. Find the energy in kWh.
Detailed Solution for Test: Work and Energy- Case Based Type Questions- 2 - Question 6
Energy consumed by four devices in the month of September = 4 × (100/1000) × 10 × 30 = 120 kWh.
Test: Work and Energy- Case Based Type Questions- 2 - Question 7
Save

Study the given passage and answer any four questions.

In the month of September, four devices of power 100 W each is used for 10 hours daily.

Q. Relate 1 kWh to joules.
Detailed Solution for Test: Work and Energy- Case Based Type Questions- 2 - Question 7
One kilowatt-hour is equivalent to the energy of 1,000 joules used for 3,600 seconds or 3.6 million Joules. In equation form: 1 kWh = 3.6 million J.
Test: Work and Energy- Case Based Type Questions- 2 - Question 8
Save

Study the given passage and answer any four questions.

In the month of September, four devices of power 100 W each is used for 10 hours daily.

Q. Define 1 kWh.
Detailed Solution for Test: Work and Energy- Case Based Type Questions- 2 - Question 8
A kilowatt hour (kWh) is a unit of measurement of energy. A kilowatt hour therefore refers to the consumption of your device. 1 kilowatt hour (kWh) is the energy consumed by a 1,000-watt or 1-kilowatt electrical appliance operating for 1 hour.
Test: Work and Energy- Case Based Type Questions- 2 - Question 9
Save

Study the given passage and answer any four questions.

In the month of September, four devices of power 100 W each is used for 10 hours daily.

Q. If the heater works 60 joules in one minute, what is its power?
Detailed Solution for Test: Work and Energy- Case Based Type Questions- 2 - Question 9
P = W/T = 60/60 = 1 J/s =1 W
Test: Work and Energy- Case Based Type Questions- 2 - Question 10
Save

Study the given passage and answer any four questions.

In the month of September, four devices of power 100 W each is used for 10 hours daily.

Q. Define power.
Detailed Solution for Test: Work and Energy- Case Based Type Questions- 2 - Question 10
We can define power as the rate of doing work, it is the work done in unit time. The SI unit of power is Watt (W) which is joules per second (J/s). Sometimes the power of motor vehicles and other machines is given in terms of Horsepower (hp), which is approximately equal to 745.7 watts.
16 videos|69 docs|56 tests
Join Course
Information about Test: Work and Energy- Case Based Type Questions- 2 Page
In this test you can find the Exam questions for Test: Work and Energy- Case Based Type Questions- 2 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Work and Energy- Case Based Type Questions- 2, EduRev gives you an ample number of Online tests for practice

Top Courses for Class 9

16 videos|69 docs|56 tests
Join Course
Download as PDF

Top Courses for Class 9

Important Questions for Work and Energy- Case Based Type Questions- 2

Find all the important questions for Work and Energy- Case Based Type Questions- 2 at EduRev.Get fully prepared for Work and Energy- Case Based Type Questions- 2 with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the Work and Energy- Case Based Type Questions- 2 syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of Work and Energy- Case Based Type Questions- 2 resources.

Work and Energy- Case Based Type Questions- 2 MCQs with Answers

Prepare for the Work and Energy- Case Based Type Questions- 2 within the Class 9 exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for Work and Energy- Case Based Type Questions- 2 Physics for Class 9

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace Work and Energy- Case Based Type Questions- 2 with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup