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Assertion Reasoning Worksheet for Intro to Three Dimensional Geometry Class 11

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Sample questions

1. Question 1 [1 mark]
Assertion (A): The distance of the point \(P(3, -4, 12)\) from the origin \(O(0,0,0)\) is \(13\text{ units}\).
Reason (R): The distance of any point \(P(x, y, z)\) from the origin is given by \(\sqrt{x^2 + y^2 + z^2}\).
(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.
2. Question 2 [1 mark]
Assertion (A): The point \((-2, 3, -4)\) lies in Octant VI.
Reason (R): The point \((2, -3, 4)\) lies in Octant IV.
(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.
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About this Assertion Reasoning Worksheet

This assertion reasoning worksheet is designed for Class 11 Maths practice from Intro to Three Dimensional Geometry Class 11. It uses the question types selected for this worksheet and keeps the preview representative of the complete set.

Solve the questions first, then use the separate answer key to check the method and identify concepts that need revision. For more practice, continue with the chapter quiz or another worksheet below.

Frequently asked questions

How many questions are in this assertion reasoning worksheet?

The complete worksheet contains 10 questions. This page shows a fixed preview of 2 questions.

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Yes. The complete download includes a questions PDF and a separate answer key PDF.

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How should I use this assertion reasoning worksheet?

Attempt the questions without the answer key, check each solution afterwards, and revise the linked chapter concepts before trying another worksheet or quiz.

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