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Assertion - Component of A along B is e...

Assertion - Component of A along B is equal to component of B along A.
Reason value of component is always less then the magnitude of vector .

A

If both Assetion and Reason are correct but Reason is the correct explanation of Assertion.

B

If both Assetion and Reason are correct but Reason is not the correct explanation of Assertion.

C

If Asserion is true but Reason is false

D

If Asserion is false but Reason is true

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Understand the Assertion The assertion states that the component of vector A along vector B is equal to the component of vector B along vector A. - The component of vector A along vector B is given by the formula: \[ A_{B} = \frac{A \cdot B}{|B|} \] where \( A \cdot B \) is the dot product of vectors A and B, and \( |B| \) is the magnitude of vector B. - Similarly, the component of vector B along vector A is given by: \[ B_{A} = \frac{B \cdot A}{|A|} \] - These two components are generally not equal unless A and B are in the same direction or have the same magnitude. Therefore, the assertion is **false**. ### Step 2: Understand the Reason The reason states that the value of a component is always less than the magnitude of the vector. - This is true because the component of a vector is a projection of that vector in a specific direction. By definition, the magnitude of a vector is the longest possible length of that vector, while the component represents only a part of that vector in a particular direction. - Mathematically, for any vector \( V \): \[ |V| \geq |V_{B}| \] where \( |V_{B}| \) is the component of vector V along vector B. ### Conclusion - The assertion is **false**. - The reason is **true**. Thus, the correct answer is that the assertion is false, but the reason is true. ### Final Answer Assertion is false, Reason is true. ---
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