Comprehension

Direction: Consider the following for the items that follow:

Let 2x2 + 2y2 + 2z2 + 3x + 3y + 3z - 6 = 0 be a sphere.

What is the diameter of the sphere? 

This question was previously asked in
NDA-II 2024 (Maths) Official Paper (Held On: 01 Sept, 2024)
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Answer (Detailed Solution Below)

Option 2 :
Free
NDA 01/2025: English Subject Test
30 Qs. 120 Marks 30 Mins

Detailed Solution

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Explanation:

Given:

Sphere: 2x2 + 2y2 + 2z2 + 3x + 3y + 3z – 6 = 0

⇒  -3 = 0

Now Radius = 

Diamter = 

∴ Option (b) is correct

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