Question

Statement1: A component of vector `vecb = 4hati + 2hatj + 3hatk` in the direction perpendicular to the direction of vector `veca = hati + hatj +hatk is hati - hatj`
Statement 2: A component of vector in the direction of `veca = hati + hatj + hatk is 2hati + 2hatj + 2hatk`
A. Both the statements are true and statement 2 is the correct explanation for statement 1.
B. Both 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.

Answer 1

Correct Answer - c
Component of vector `vecb = 4hati + 2hatj +3hatk ` in the direction of `veca=hati +hatj +hatk is (veca.vecb)/ (|veca|) veca/ (|veca|) or 3hati + 3hatj + 3hatk `. Then componant in the direaction perpendicular to the direction of `veca =hati+hatj + hatk "is " vecb -3hati + 3hatj +3hatk= hati -hatj`