Let a , b , c be three vectors such that a b = 2( a c ). If | a | = 1, | b | = 4, | c | = 2, and the angle...

Question

Let a , b , c be three vectors such that a b = 2( a c ). If | a | = 1, | b | = 4, | c | = 2, and the angle between b and c is 60^ , then | a . c | is :

Accepted Answer

4

JEE Main 2026 Mathematics question

Solution

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