NEET Exam > NEET Questions > What happen, when we multiply a vector by -2?...
Start Learning for Free
What happen, when we multiply a vector by -2?
- a)Direction reverses and unit changes
- b)Direction reverses and magnitude is doubled
- c)Direction remains unchanged but unit changes
- d)Neither direction reverses not unit changes but magnitude is doubled
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
What happen, when we multiply a vector by -2?a) ...
When a vector is xplied by -2 its magnitude is douled but direction is reversed
Free Test
FREE
| Start Free Test |
Community Answer
What happen, when we multiply a vector by -2?a) ...
Understanding Vector Multiplication by -2
When you multiply a vector by a scalar, such as -2, both the direction and magnitude of the vector are affected. Let’s break down what happens:
Magnitude Change
- The magnitude of the vector is multiplied by the absolute value of the scalar.
- In this case, multiplying by -2 doubles the original magnitude.
- If the original vector had a magnitude of 'a', the new magnitude becomes '2a'.
Direction Change
- Multiplying by a negative scalar reverses the direction of the vector.
- If the original vector points in one direction, the resulting vector will point in the exact opposite direction.
Conclusion
- Putting it all together, when you multiply a vector by -2:
- The **magnitude** is **doubled** (from 'a' to '2a').
- The **direction** is **reversed** (from one direction to the opposite).
Thus, the correct answer is option **B: Direction reverses and magnitude is doubled**. This is a fundamental property of vector operations and is crucial in understanding vector behavior in physics and mathematics, especially in contexts like NEET.
When you multiply a vector by a scalar, such as -2, both the direction and magnitude of the vector are affected. Let’s break down what happens:
Magnitude Change
- The magnitude of the vector is multiplied by the absolute value of the scalar.
- In this case, multiplying by -2 doubles the original magnitude.
- If the original vector had a magnitude of 'a', the new magnitude becomes '2a'.
Direction Change
- Multiplying by a negative scalar reverses the direction of the vector.
- If the original vector points in one direction, the resulting vector will point in the exact opposite direction.
Conclusion
- Putting it all together, when you multiply a vector by -2:
- The **magnitude** is **doubled** (from 'a' to '2a').
- The **direction** is **reversed** (from one direction to the opposite).
Thus, the correct answer is option **B: Direction reverses and magnitude is doubled**. This is a fundamental property of vector operations and is crucial in understanding vector behavior in physics and mathematics, especially in contexts like NEET.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Similar NEET Doubts
Top Courses for NEETView all
What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer?
Question Description
What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer?.
What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer?.
Solutions for What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer?, a detailed solution for What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice What happen, when we multiply a vector by -2?a) Direction reverses and unit changes b) Direction reverses and magnitude is doubled c) Direction remains unchanged but unit changes d) Neither direction reverses not unit changes but magnitude is doubled Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup