Last Updated on April 12, 2025 by sanjjeett
Hello students, we are providing assertion and reasoning questions for ICSE class 10 physics. Assertion and reasoning questions are the new question format that is introduced in CISCE (ICSE and ISC) board. The resources for ICSE assertion and reasoning questions are very less. So, to help icse board students we have created chapterwise assertion and reasoning questions for class 10 physics. In this article, you will find assertion and reasoning questions for ICSE Class 10 Physics Chapter 3 Machines.
| Chapter | Machines |
| Type of Questions | Assertion and Reasoning Questions |
| Nature of Questions | Competency Based Questions |
| Board | ICSE |
| Class | 10 |
| Subject | Physics |
| Unit | Unit 1 Force, Work, Power and Energy |
| Useful for | Class 10 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | ICSE Class 10 Physics Chapterwise Assertion Reasoning |
Assertion and Reasoning Questions on Machines for ICSE Class 10 Physics
Assertion and reasoning questions are also known as assertion reason questions. Assertion-Reason questions are a type of question format used in ICSE exams where two statements are provided: an Assertion (A) and a Reason (R). Students need to determine whether each statement is true or false and if the Reason correctly explains the Assertion.
Q1. Assertion (A): The mechanical advantage of an ideal machine is always greater than 1.
Reason (R): In an ideal machine, efficiency is always less than 100%.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (b)
Q2. Assertion (A): A single fixed pulley has a velocity ratio of 1.
Reason (R): It simply changes the direction of the applied force.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (a)
Q3. Assertion (A): The efficiency of a machine is defined as the ratio of input work to output work.
Reason (R): The presence of friction reduces the output work.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (c)
Q4. Assertion (A): In a lever of the third order, the load is placed between the effort and the fulcrum.
Reason (R): In this class of lever, mechanical advantage is always less than 1.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (d)
Q5. Assertion (A): The mechanical advantage of a screw jack is usually high.
Reason (R): A screw jack requires very little effort to lift heavy loads due to its long pitch.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (d)
Q6.
Assertion (A): Velocity ratio of an inclined plane is independent of friction.
Reason (R): It depends only on the ratio of length to height of the inclined plane.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (a)
Q7. Assertion (A): A pulley system can have an efficiency greater than 100%.
Reason (R): Machines can produce more output work than the input work.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (b)
Q8. Assertion (A): In an ideal machine, the mechanical advantage is always equal to the velocity ratio.
Reason (R): In an ideal machine, there is no loss of energy due to friction.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (a)
Q9. Assertion (A): A screw jack can lift very heavy loads with minimal effort because it has a short pitch.
Reason (R): A smaller pitch reduces the velocity ratio and increases the mechanical advantage.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (d)
Q10. Assertion (A): A machine with 80% efficiency must have a mechanical advantage equal to its velocity ratio.
Reason (R): Efficiency is given by the formula: MA/VR × 100.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (c)
Q11. Assertion (A): In an inclined plane, decreasing the angle of inclination decreases the velocity ratio.
Reason (R): The velocity ratio of an inclined plane is L/H (length of slope / height).
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (c)
Q12. Assertion (A): A single movable pulley provides a mechanical advantage of 2.
Reason (R): The pulley system works on the principle of conservation of energy.
(a) Both assertion and reason are true.
(b) Both assertion and reason are false.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.
Correct Option: (a)
We hope the given ICSE assertion reasoning questions for Machines helps you in your learning.
Also check
- Spectrum Assertion and Reasoning Questions for ICSE Class 10 Physics Chapter 6
- Refraction Through a Lens Assertion and Reasoning Questions for ICSE Class 10 Physics Chapter 5
- Refraction of Light at Plane Surfaces Assertion and Reasoning Questions for ICSE Class 10 Physics Chapter 4
- Machines Assertion and Reasoning Questions for ICSE Class 10 Physics Chapter 3
- Force Assertion and Reasoning Questions for ICSE Class 10 Physics Chapter 1
- Work, Energy and Power Assertion and Reasoning Questions for ICSE Class 10 Physics Chapter 2
Topics from which assertion reasoning questions may be asked
- Definition and principle of a machine
- Mechanical advantage (M.A.)
- Velocity ratio (V.R.)
- Efficiency of a machine
- Ideal vs. Real machines
- Load and effort
- Lever and its classes (I, II, III)
- Pulley systems (fixed, movable, block and tackle)
- Inclined plane
- Screw jack
- Relationship between M.A., V.R., and efficiency
- Limitations due to friction and deformation
Assertion and reasoning questions based on above topics may be asked.
Topics found difficult by students
- Understanding of lever of class 1 with M.A. greater than 1 and class 2 lever.
- Change in mechanical advantage when the load is shifted towards fulcrum in class II lever. Speed of light for all wavelengths in vacuum is the same.
- Advantages of movable and fixed pulley.
- Numerical problems based on p = f.v and machines.
These are the topics from chapter Machines, generally found difficult by students studying in ICSE Class 10 Physics.
Frequently Asked Questions (FAQs) on Machines ICSE Class 10 Physics Assertion and Reasoning Questions
Q1: What are Assertion and Reasoning questions?
A1: Assertion and Reasoning questions are a type of question format used in ICSE exams where two statements are provided: an Assertion (A) and a Reason (R). Students need to determine whether each statement is true or false and if the Reason correctly explains the Assertion.
Q2: How do Assertion Reasoning questions differ from other question types?
A2: Unlike multiple-choice questions, Assertion-Reason questions require students to analyze the relationship between two statements. It’s not just about knowing the facts but understanding how they connect logically.
Q3: What steps should I follow to correctly answer Assertion and Reasoning questions?
A3: Follow these steps:
Read both statements carefully. Understand what each statement is saying.
Determine the truth value of each statement. Decide if each statement is true or false independently.
Analyze the relationship. If both statements are true, decide whether the Reason (R) correctly explains the Assertion (A).
Choose the correct option. Based on your analysis, select the appropriate answer from the given options.
Q4: What options are typically provided for Assertion and Reasoning questions?
A4: The typical options are:
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, but R is not the correct explanation of A.
C. A is true, but R is false.
D. A is false, but R is true.
Q5: What should I check to determine if the Reason correctly explains the Assertion?
A5: Ensure that the Reason provides a logical explanation for the Assertion. Check if the Reason directly addresses the cause or basis of the Assertion and if they are contextually linked.
Q6: How can I improve my skills in answering Assertion and Reasoning type questions?
A6: Practice regularly with sample questions and past papers. Focus on understanding the concepts thoroughly rather than rote memorization. Analyzing how different facts and concepts interrelate will enhance your ability to correctly answer these questions.
Q7: What are common mistakes to avoid when answering Assertion and Reasoning questions?
A7: Common mistakes include:
Not reading the statements carefully and missing key details.
Assuming the Reason explains the Assertion without checking the logical connection.
Confusing the order or relationship between the statements.
Overthinking and adding information not provided in the question.
Q8: What resources can help me practice Assertion and Reasoning questions for ICSE Class 10 Physics?
A8: Use study guides specifically designed for Assertion-Reason questions. Online educational platforms and reference books for ICSE Class 10 Physics also offer practice questions and explanations. xamcontent.com/cisce also provides assertion reason questions for ICSE Class 10 Physics.
