If a unit vector is represented by 0.5i + 0.8j + ck, the value of c is (a) 1 (b) √(0.11) (c) √(0.01) (d) 0.39

Answer: (b). For a unit vector the sum of squares of components is 1. 0.25 + 0.64 + c² = 1 ⇒ c² = 0.11 So the answer is (b) √(0.11).

If a unit vector is represented by 0.5i + 0.8j + ck, the value of c is | NEET 1999 (AIPMT)

Q20NEET 1999 · AIPMTEasy

Vector Basics, Unit Vectors & Components

If a unit vector is represented by $0.5\hat{i} + 0.8\hat{j} + c\hat{k}$ , the value of $c$ is

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Answer: (b)

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