Class 9 Science Chapter 10 Work and Energy MCQ

NCERT MCQ Solutions for Class 9 Science Chapter 10 Work and Energy describes a best approach to mastering key concepts. These 9th Science MCQ solutions help students understand the principles of work, energy and power through multiple-choice questions. Practicing Class 9 Science Chapter 10 MCQ enhances problem-solving skills and topic-wise clarity. These MCQs cover definitions, formulas and real-life applications, making them essential for exam preparation. Solving Class 9 Science Work and Energy MCQ Questions ensures better retention and accuracy in answering physics problems.
Class 9 Science Chapter 10 NCERT Solutions
Class 9 Multiple Choice Questions
Class 9 Science MCQ

Work and Energy in Class 9 Science Chapter 10 MCQ

Work and energy are fundamental concepts in physics that play a lead role in understanding various natural phenomena. In Class 9 Science Chapter 10 MCQ, students explore how work is defined in scientific terms, the various forms of energy and their transformations. Work is said to be done when a force is applied to an object, causing displacement in the direction of the applied force. This principle is essential in solving Class 9 Science Work and Energy MCQ Questions, which often test students’ grasp of these concepts. The relationship between work and energy is significant, as work done on an object changes its energy state. Practicing Class 9 Science Chapter 10 MCQ Questions and Answers helps students analyze real-world applications, such as lifting objects against gravity or understanding the mechanical advantage of machines. With Class 9 Science Chapter 10 MCQ Practice, students can reinforce their knowledge and prepare effectively for exams. Understanding these principles provides a strong foundation for advanced physics studies.

Q1. You lift a suitcase from the floor and keep it on a table. The work done by you on the suitcase depends on

[A]. The weight of the suitcase.

[B]. Height of table from the floor.

[C]. Time taken by you to lift the suitcase.

[D]. Both [a] and [b].

Q2. A man raises a weight of 1 kg to a height of 1 m and holds it there for 30 s. How much work has he performed?

[A]. 0 J

[B]. 9.8 J

[C]. 9.8 x 31 J

[D]. 9.8 x 30 J

View Answer

Class 9 Science Chapter 10 MCQ on Energy Transfer

The concept of work in physics differs from its everyday meaning. Scientifically, work is calculated as the product of force and displacement, provided the displacement occurs in the direction of the applied force. In NCERT Book Solutions Class 9 Science Work and Energy MCQ Online Test, students are often required to determine the work done by a force under different conditions. The SI unit of work is the joule and it can be positive, negative or zero depending on the direction of force and displacement. Solving Class 9 Science Chapter 10 MCQ with Answers enables students to understand how work is related to kinetic and potential energy. For instance, when an object moves, its kinetic energy increases due to positive work done. However, in scenarios like frictional motion, negative work reduces the energy of the system. Reviewing Class 9 Science Work and Energy MCQ Questions helps students develop problem-solving skills in determining work done under various force conditions. By taking Class 9 Science Chapter 10 MCQ Quiz, students can challenge their conceptual understanding and application skills.

Q3. When a body falls freely towards the earth, then its total energy

[A]. Increases.

[B]. Decreases.

[C]. Remains constant.

[D]. First decreases and then increases.

Q4. An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass is 3.5 kg. Both spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same

[A]. Acceleration.

[B]. Momenta.

[C]. Potential energy.

[D]. Kinetic energy.

Energy Transformations Based MCQ from 9th Science Chapter 10

Energy is the capacity to do work, and it exists in various forms, including kinetic, potential, thermal and chemical energy. In Class 9 Science Work and Energy MCQ Test, students analyze how energy is converted from one form to another. For example, a moving car has kinetic energy, while a stretched rubber band possesses potential energy. These concepts are frequently tested in Class 9 Science Chapter 10 Multiple Choice Questions, where students need to identify correct energy transformations. Energy conservation is a fundamental principle stating that energy cannot be created or destroyed, only transformed from one form to another. Practicing Class 9 Science Work and Energy MCQ Worksheet allows students to apply this principle in real-world examples like hydroelectric power generation or roller coasters. Through Class 9 Science Chapter 10 MCQ Questions PDF, students can deepen their understanding of energy conversion and efficiency in different physical systems.

Q5. A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process, the potential energy of the car

[A]. Becomes 16 times that of initial.

[B]. Becomes twice to that of initial.

[C]. Becomes 4 times that of initial.

[D]. Does not change.

Q6. Work is done on a body when

[A]. A force acts on the body but body is not displaced from its position.

[B]. Force acts on a body in a direction perpendicular to the direction of displacement of body.

[C]. No force acts on the body but body is displaced by a finite distance.

[D]. A force acts on the body and it is displaced through some distance along the direction of force.

Class 9 Science NCERT Chapter 10 MCQ on Power

Power is the rate at which work is done or energy is transferred. It is measured in watts (W) and is useful in determining the efficiency of machines and electrical appliances. In Class 9 Science Work and Energy MCQ PDF, students frequently encounter problems that require calculating power output in different scenarios. A higher power rating means that a device can perform more work in less time. In Class 9 Science NCERT Chapter 10 MCQ Online, students explore examples such as the power of an engine in a car or the wattage of a light bulb. The study of power is significant in designing efficient machines and understanding energy consumption. By attempting Class 9 Science Work and Energy MCQ Questions and Answers, students can strengthen their problem-solving abilities in determining power-related values. Class 9 Science Chapter 10 MCQ Worksheet further aids in comprehending how power plays a role in mechanical and electrical applications.

Q7. When some mechanical work is done on an object

[A]. The object gains energy.

[B]. The object loses energy.

[C]. Potential energy is transformed into kinetic energy.

[D]. Kinetic energy is transformed into potential energy.

Q8. If the speed of an object is doubled then its

[A]. Kinetic energy is doubled.

[B]. Kinetic energy is raised to 4 times of its initial value.

[C]. Potential energy is doubled.

[D]. Potential energy becomes 4 times of its initial value.

Importance of 9th Science Chapter 10 Work and Energy MCQs

To prepare well the concepts of work and energy, students should practice multiple-choice questions regularly. Class 9 Science Chapter 10 MCQ Online Test provides a structured approach to assessing conceptual understanding and application-based learning. By solving Class 9 Science Work and Energy MCQ Quiz, students can improve their ability to analyze problems quickly and accurately. Class 9 Science Chapter 10 MCQ Questions help students reinforce theoretical knowledge by applying it to practical scenarios. Educational platforms like Tiwari Academy, provide Class 9 Science Work and Energy MCQ Online to help learners prepare effectively for competitive exams. With continuous practice, students develop confidence in solving numerical problems related to work, energy and power. Engaging with Class 9 Science Chapter 10 MCQ Questions PDF ensures a strong conceptual foundation that is essential for higher studies in physics.

Q9. In a tug of war the work done by the winning team and the losing team are respectively

[A]. Positive, positive.

[B]. Negative, positive.

[C]. Positive, negative.

[D]. Zero, zero.

Why is it important to solve Class 9 Science Chapter 10 MCQ for exams?

Solving Class 9 Science Chapter 10 MCQ Questions and Answers is important for exam preparation as it helps students grasp key concepts related to work and energy efficiently. MCQs test a student’s ability to recall facts, understand principles and apply formulas quickly. These questions cover fundamental topics like the scientific definition of work, different forms of energy and the principle of energy conservation. Practicing Class 9 Science Work and Energy MCQ Quiz enhances problem-solving skills, improves speed and boosts confidence in answering physics-based numerical problems. MCQs provide an easy way to assess one’s knowledge level and identify weak areas for further improvement.

What is the relationship between work, energy and power?

Work, energy and power are interconnected concepts in physics. Work is done when a force causes displacement in an object and the energy of the object changes as a result. Energy is the capacity to do work and it exists in various forms like kinetic and potential energy. Power, on the other hand, measures how quickly work is done or how fast energy is transferred. In Class 9 Science Work and Energy MCQ PDF, students learn that power is calculated as work done per unit time. Understanding this relationship is useful for solving Class 9 Science Chapter 10 Multiple Choice Questions, which test these concepts in real-life applications, such as the efficiency of machines and energy consumption in electrical circuits.

How can students effectively prepare for Class 9 Science Work and Energy MCQ Test?

To prepare effectively for Class 9 Science Work and Energy MCQ Test, students should start by understanding the basic concepts of work, energy and power from their NCERT textbooks. They should then practice Class 9 Science Chapter 10 MCQ Worksheet to apply theoretical knowledge to practical problems. Regularly solving Class 9 Science Work and Energy MCQ Online helps improve accuracy and speed. Referring to Class 9 Science Chapter 10 MCQ Questions PDF allows students to revise frequently asked questions and familiarize themselves with different question patterns. Time management and reviewing mistakes after practice tests also enhance overall preparation and performance in exams.