Q 2128101901.    

Assertion : The spheres `x^2 + y^2+z^2 + 2ax + c = 0` and `x^2 + y^2 + z^2 + 2 by + c = 0` touch if `1/a^2 +1/b^2 =1/c`

Reason : Two spheres with centres `C_1` and `C_2` and radii `r_1,r_2` touch each other if ` | r_1 pm r_2 | = | C_1 C_2 |`

A Both A and R individually true and R is the correct explanation of A
B Both A and R are individually 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

Find instant solution to any question from our database of 1.5 Lakh + Questions

 

Access free resources including

Engineering

Medical

Banking

DEFENCE

SSC

RRB

CBSE-NCERT

OLYMPIAD

Today's Score

0
Success Rate: NAN %

Practice & Test

Sr. No.SubjectTagCorrectRecorded Answer