Q.

Which of the following point lies inside the sphere x2+ y2 - 4x - 6y + 8y -7 = 0?

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya

a

(1, -2, 1)

b

(0, 0, 3)

c

(0, 1,2)

d

(1,2,0)

answer is D.

(Unlock A.I Detailed Solution for FREE)

Detailed Solution

Centre of the sphere is c (2, 3, 4) and radius is r=4+9+16−(−7)=6For point P(1,2,0),CP=1+1+16=18<6So, point P(1, 2,0) lies inside the sphere. For other points, we have CP > 6.
Watch 3-min video & get full concept clarity
Related Blogs
Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
Result Producing online coaching for JEE/NEET of south India
Largest All India Test Series for JEE/NEET
Best Online Course for IIT JEE
Best Online Course for NEET
Best Online Course for CBSE
score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

Related Blogs
Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
Result Producing online coaching for JEE/NEET of south India
Largest All India Test Series for JEE/NEET
Best Online Course for IIT JEE
Best Online Course for NEET
Best Online Course for CBSE
whats app icon