1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

For non-zero vectors a, b, c; |(a $$\times$$ b) . c| = |a| |b| |c| holds if and only if

A
a . b = 0, b . c = 0
B
b . c = 0, c . a = 0
C
c . a = 0, a . b = 0
D
a . b = b . c = c . a = 0
2
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

If a and b are two vectors such that | a | = 1, | b | = 4 a . b = 2. If c = (2a $$\times$$ b) $$-$$ 3b, then angle between b and c

A
$${\pi \over 6}$$
B
$${\pi \over 3}$$
C
$${2\pi \over 3}$$
D
$${5\pi \over 6}$$
3
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

If $$a = - \widehat i + \widehat j + \widehat k$$ and $$b = 2\widehat i + \widehat k$$, then find z component of a vector r, which is coplanar with a and b, r . b = 0 and r . a = 7.

A
0
B
3
C
6
D
5/2
BITSAT Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12