हिंदी

Which of the following is magnitude of vectors. a→=i^+j^+k^

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प्रश्न

Which of the following is magnitude of vectors. `veca = hati + hatj + hatk`

विकल्प

  • `sqrt(3)`

  • `sqrt(3)`

  • 0

  • 2

MCQ
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उत्तर

`sqrt(3)`

Explanation:

`veca = hati + hatj + hatk`

`|veca| = sqrt(1^2 + 1^2 + 2^2)`

`[because |xhati + yhatj + zhatk| = sqrt(x^2 + y^2 + z^2)]`

= `sqrt(3)`

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