Statement 1: let `A( vec i+ vec j+ vec k)a n dB( vec i- vec j+ vec k)` be two points. Then point `P(2 vec i+3 vec j+ vec k)` lies exterior to the sphe
Statement 1: let `A( vec i+ vec j+ vec k)a n dB( vec i- vec j+ vec k)`
be two points. Then
point `P(2 vec i+3 vec j+ vec k)`
lies exterior to the sphere with `A B`
as its diameter.
Statement 2: If `Aa n dB`
are any two points and `P`
is a point in space such that ` vec P Adot vec P B >0`
, then point `P`
lies exterior to the sphere with `A B`
as its diameter.
A. Both the statements are true, and Statement 2 is the correct explanation for Statement 1.
B. Both the Statements are true, but Statement 2 is not the correct explanation for Statement 1.
C. Statement 1 is true and Statement 2 is false.
D. Statement 1 is false and Statement 2 is true.
1 Answers
Correct Answer - b
`vec(PA)*vec(PB)= 9 gt 0`. Therefore, P is exterior to the sphere. Statement 2 is also true (standard result).