1.

The position vectors of P and Q are respectively a and b. If R is a point on PQ such that PR = 5PQ, then the position vector of R is

Answer»

5b - 4a
5b + 4a
4b - 5a
4b + 5a

Solution :Given, PR = 5 PQ
It means R DIVIDES PQ externally in the ratio 5 : 4.
`therefore` Position VECTOR of `R=(5b-4a)/(5-4)=5b-4a`


Discussion

No Comment Found

Related InterviewSolutions