Last Updated on April 17, 2024 by XAM CONTENT
Hello students, we are providing assertion reason questions for class 8 science. Assertion reason questions are the new question format that is introduced in CBSE board. The resources for assertion reason questions are very less. So, to help students we have created chapterwise assertion reason questions for class 8 science. In this article, you will find assertion reason questions for cbse class 8 science chapter 8 Force and Pressure.
| Chapter | Force and Pressure |
| Type of Questions | Assertion Reason Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 8 |
| Subject | Science |
| Useful for | Class 8 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 8 Science Chapterwise Assertion Reason |
Assertion Reason on Force and Pressure
Questions:
Q.1. Assertion (A): In the game of tug of war; sometimes the rope doesn’t seem to move to any side even if strong forces are applied from both sides.
Reason (R): Equal force applied from opposite sides on any object makes the net applied force zero.
(a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
(b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A)
(c) Assertion (A) is true but reason (R) is false.
(d) Assertion (A) is false but reason (R) is true.
Difficulty Level: Easy
Ans. Option (a) is correct.
Explanation: Forces applied on an object in the same direction add to one another. If the two forces act in the opposite directions on an object, the net force acting on it is the difference between the two forces. Thus, the net force on an object is zero if the two forces acting on it in opposite directions are equal.
Q.2. Assertion (A): The force due to air in a column of the height of the atmosphere and area 15 cm x 15 cm (nearly equal to the area of your head) is nearly equal to the force of gravity on an object of mass 225 kg, then also it is bearable.
Reason (R): The atmospheric pressure is neutralised by the force of gravity experienced by us.
(a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
(b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A)
(c) Assertion (A) is true but reason (R) is false.
(d) Assertion (A) is false but reason (R) is true.
Difficulty Level: Easy
Ans. Option (c) is correct.
Explanation: The reason we are not crushed under this force of gravity is that the pressure inside our bodies is also equal to the atmospheric pressure and balances the pressure from outside.
Also Check
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Topics from which assertion reason questions may be asked
- Learn the basic concept of force.
- Understand the various facets of force.
- Learn about the different changes that are due to the application of force.
- Learn different types of forces.
- Understand the concept of pressure.
- Learn about pressure exerted by liquids and gases (atmospheric pressure).
