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JEE Exam  >  JEE Tests  >  Mathematics (Maths) for JEE Main & Advanced  >  Test: Scalar Product Of Two Vectors - JEE MCQ

Test: Scalar Product Of Two Vectors - JEE MCQ


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5 Questions MCQ Test Mathematics (Maths) for JEE Main & Advanced - Test: Scalar Product Of Two Vectors

Test: Scalar Product Of Two Vectors for JEE 2024 is part of Mathematics (Maths) for JEE Main & Advanced preparation. The Test: Scalar Product Of Two Vectors questions and answers have been prepared according to the JEE exam syllabus.The Test: Scalar Product Of Two Vectors MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Scalar Product Of Two Vectors below.
Solutions of Test: Scalar Product Of Two Vectors questions in English are available as part of our Mathematics (Maths) for JEE Main & Advanced for JEE & Test: Scalar Product Of Two Vectors solutions in Hindi for Mathematics (Maths) for JEE Main & Advanced course. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free. Attempt Test: Scalar Product Of Two Vectors | 5 questions in 10 minutes | Mock test for JEE preparation | Free important questions MCQ to study Mathematics (Maths) for JEE Main & Advanced for JEE Exam | Download free PDF with solutions
Test: Scalar Product Of Two Vectors - Question 1
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If   are any two vectors, then

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Test: Scalar Product Of Two Vectors - Question 2
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The angle between the vectors is:    is :

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a = 6i - 3j + 2k      b = 2i + j - 2k
a.b = 12 - 3 - 4 = 5
|a| = [(6)2 + (-3)2 + (2)2]1/2 
|a| = [36 + 9 + 4]½
|a| = (49)½
|a| = 7
|b| = [(2)2 + (1)2 + (-2)2]½
|b| = [4 + 1 + 4]½
|b| = 3
Cosθ = (a.b)/|a||b|
= 5/(7)(3)
= 5/21
θ = cos-1(5/21)

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Test: Scalar Product Of Two Vectors - Question 3
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If  are two vectors, such that , then = ……​

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 |a - b|2 = |a|2 + |b|2 - 2|a||b|
|a - b|2  = (3)2 + (2)2 - 2(5)
|a - b|2  = 9 + 4 - 10
|a - b|2  = 3 
|a - b|   = (3)½.

Test: Scalar Product Of Two Vectors - Question 4
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The projection of the vector  on the vector is:​
Detailed Solution for Test: Scalar Product Of Two Vectors - Question 4

Projection = (A.B)/|B|
= [(i + 2j + k) . (2i + 3j + 2k)]/[(2)2 + (3)2 + (2)2]½
= (2 + 6 + 2)/[4 + 9 + 4]½
= 10/(17)1/2

Test: Scalar Product Of Two Vectors - Question 5
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The angle between two non-zero vectors  is given by
Detailed Solution for Test: Scalar Product Of Two Vectors - Question 5

A sequence is a function whose domain is the set of natural numbers or a subset of the natural numbers. We usually use the symbol an to represent a sequence, where n is a natural number and an is the value of the function on n. A sequence may be finite or infinite.

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