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Misc 16 (MCQ) - Chapter 10 Class 12 Vector Algebra

Last updated at Dec. 16, 2024 by Teachoo

Transcript

Misc 16 If ฮธ is the angle between two vectors ๐‘Ž โƒ— and ๐‘ โƒ— , then ๐‘Ž โƒ— โ‹…๐‘ โƒ— โ‰ฅ 0 only when (A) 0 < ๐œƒ< ๐œ‹/2 (B) 0 โ‰ค ๐œƒ โ‰ค๐œ‹/2 (C) 0 < ๐œƒ < ฯ€ (D) 0 โ‰ค๐œƒ โ‰ค ๐œ‹ Given, ๐‘Ž โƒ—. ๐‘ โƒ— โ‰ฅ 0 |๐‘Ž โƒ— | |๐‘ โƒ— | cos ฮธ โ‰ฅ 0 Assuming |๐‘Ž โƒ— | โ‰  0 and |๐‘ โƒ— | โ‰  0 cos ฮธ โ‰ฅ 0/|๐‘Ž โƒ— ||๐‘ โƒ— | cos ฮธ โ‰ฅ 0 โˆด 0 โ‰ค ฮธ โ‰ค ๐œ‹/2 So, (B) is the correct answer
  1. Chapter 10 Class 12 Vector Algebra
  2. Serial order wise

    3. Miscellaneous

    Supplementary examples and questions from CBSE →
Supplementary examples and questions from CBSE →
Chapter 10 Class 12 Vector Algebra
Serial order wise

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo