Mathematics MCQs Chapter 7 Class 12

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Created on January 26, 2022 By Ali Durrani

Math Ch 7 Vectors Class 12

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If any two vectors of scalar triple product are equal, then its value is equal to

-1

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The angle in semi-circle is equal to:

?/2

?/3

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. If the scalar product of three vectors is zero, then vectors are

Collinear

coplanar

non coplanar

non-collinear

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Cross product or vector product is defined

In plane only

in space only

everywhere

in vector field

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If the cross product of two vectors is zero, then the vectors must be

Parallel

orthogonal

reciprocal

Non coplanar

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. If the dot product of two vectors is zero, then the vectors must be

Parallel

orthogonal

reciprocal

equal

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Which of the following can be the direction angles of some vector

45°, 45°, 60°

30°, 45°, 60°

45°, 60°, 60°

obtuse

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A point P in space has __________ coordinates.

infinitely many

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The lines joining the mid-points of any two sides of a triangle is always _____to the third side.

Equal

Parallel

perpendicular

base

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The vector whose initial point is at the origin and terminal point is ? , is called

Null vector

unit vector

position vector

normal vector

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Parallelogram law of vector addition to describe the combined action of two forces, was used
by

Cauchy

Aristotle

Alkhwarzmi

Leibnitz

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Two vectors are said to be negative of each other if they have the same magnitude and
__________direction.

Same

opposite

negative

parallel

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The vector whose magnitude is 1 is called

Null vector

unit vector

free vector

scalar

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The angles ?, ?, ??? ? which a non-zero vector ? makes with ? − ????, ? − ???? and
? − ???? respectively are called_____________ of ?.

Direction cosines

direction ratios

direction angles

inclinations

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A point P in space has __________ coordinates.

infinitely many

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The lines joining the mid-points of any two sides of a triangle is always _____to the third side.

Equal

Parallel

perpendicular

base

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The vector whose initial point is at the origin and terminal point is ? , is called

Null vector

unit vector

position vector

normal vector

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Parallelogram law of vector addition to describe the combined action of two forces, was used
by

Cauchy

Aristotle

Alkhwarzmi

Leibnitz

59 / 61

Two vectors are said to be negative of each other if they have the same magnitude and
__________direction.

Same

opposite

negative

parallel

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The vector whose magnitude is 1 is called

Null vector

unit vector

free vector

scalar

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