EASY
12th West Bengal Board
IMPORTANT
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Two vectors may not be collinear even if they are like vectors.

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Important Questions on Vectors

EASY
12th West Bengal Board
IMPORTANT
RUDIMENTS of MATHEMATICS For Class 12 of +2 Level>Chapter 23 - Vectors>EXERCISE>Q 2
Two vectors may not be collinear even if they are like vectors.
MEDIUM
12th West Bengal Board
IMPORTANT
RUDIMENTS of MATHEMATICS For Class 12 of +2 Level>Chapter 23 - Vectors>EXERCISE>Q 2
If A→=3i^-5j^-k^ then A→=35.
EASY
12th West Bengal Board
IMPORTANT
RUDIMENTS of MATHEMATICS For Class 12 of +2 Level>Chapter 23 - Vectors>EXERCISE>Q 2
Two unit vectors must always be equal. 
EASY
12th West Bengal Board
IMPORTANT
RUDIMENTS of MATHEMATICS For Class 12 of +2 Level>Chapter 23 - Vectors>EXERCISE>Q 2
The vectors (-2, 1, 1) and (r, 3, 3) are collinear when r=-23.
EASY
12th West Bengal Board
IMPORTANT
RUDIMENTS of MATHEMATICS For Class 12 of +2 Level>Chapter 23 - Vectors>EXERCISE>Q 2
45°, 60° and 120° may be the direction angles of a vector.
EASY
12th West Bengal Board
IMPORTANT
RUDIMENTS of MATHEMATICS For Class 12 of +2 Level>Chapter 23 - Vectors>EXERCISE>Q 2
If a vector makes angle 45° with the x-axis and the z-axis, then it makes the angle 45° with y-axis also.
EASY
12th West Bengal Board
IMPORTANT
RUDIMENTS of MATHEMATICS For Class 12 of +2 Level>Chapter 23 - Vectors>EXERCISE>Q 3
For two non-null vectors a→ and b,→ |a→+b→|=|a→|+|b→| if and only if a→ and b→ are
EASY
12th West Bengal Board
IMPORTANT
RUDIMENTS of MATHEMATICS For Class 12 of +2 Level>Chapter 23 - Vectors>EXERCISE>Q 3
Let α→=3i+4j-k and β→=6i+8j-2k. Then the vectors α→ and β→ are