If two non-zero vectors are perpendicular, which condition is correct? (Level 10 practice)
यदि दो non-zero vectors perpendicular हैं, तो कौन-सी condition सही है? (लेवल 10 अभ्यास)
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Correct Answer
A. a·b = 0
ExplanationStep 1: Use the dot product property for perpendicular vectors. Step 2: When the angle is 90°, cos 90° = 0, so a·b = 0. Step 3: For perpendicular vectors, remember dot product zero.
Step 1: Perpendicular vectors के लिए dot product property लगाएँ। Step 2: जब angle 90° हो, cos 90° = 0, इसलिए a·b = 0। Step 3: Perpendicular दिखे तो dot product zero याद रखें।