For \overrightarrow{a} \and \overrightarrow{b} which of the following properties hold? 1. If \overrightarrow{a} \and {b} ^{\to} are two vectors parallel to each other then \overrightarrow{{a}} \\times\overrightarrow{{b}} = 0 2. If \overrightarrow{a} \and \overrightarrow{b} are two vectors perpendicular to each other then \overrightarrow{{a}} \.\overrightarrow{{b}} = 0 3. A cross product is commutative \overrightarrow{{a}} \\times\overrightarrow{{b}} = \overrightarrow{{ b}} \\times{{a^{\to}}} Select the correct answer using code given below:

Correct Answer is : 1 and 2 only

UPSC NDA Math Model Paper 9

Question : 101 of 120

Marks: +1, -0

For

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‌and‌

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which of the following properties hold?
1. If

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‌and‌

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are two vectors parallel to each other then

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=0
2. If

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‌and‌

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are two vectors perpendicular to each other then

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=0
3. A cross product is commutative

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‌b

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Select the correct answer using code given below:

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