If a⃗ = 2î + ĵ + 3k̂, b⃗ = 3î + 5ĵ − 2k̂, then consider the given statements:…
PYQ UPPSC LT Grade (Assistant Teacher) 2025
If a⃗ = 2î + ĵ + 3k̂, b⃗ = 3î + 5ĵ − 2k̂, then consider the given statements: I. a⃗ × b⃗ = −17î + 13ĵ + 7k̂, a⃗·b⃗ = 5. II. |a⃗ × b⃗| = √507, a⃗·b⃗ = 5. III. |a⃗ × b⃗| = √71, a⃗·b⃗ = 6. Which of the above statements is/are incorrect?
- A.
Only III
- B.
All I, II and III
- C.
Only II
- D.
Only I
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