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Introduction to Three Dimensional Geometry — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsIntroduction to Three Dimensional Geometry1 Mark
MCQ
Under what condition does the equation $x^2+ y^2+ z^2+ 2ux + 2vy + 2wz + d$ represent a real sphere:
  • A
    $ u^2+v^2+w^2=d^2 $
  • ✓
    $ u^2+v^2+w^2>d $
  • C
    $ u^2+v^2+w^2$
  • D
    $ u^2+v^2+w^2$
✓

Answer

Correct option: B.
$ u^2+v^2+w^2>d $

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