Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Physics
Chapter
Mathematics in Physics

NTA Abhyas 2020 · Physics · Mathematics in Physics

The resultant of two vectors is perpendicular to first vector of...

The resultant of two vectors is perpendicular to first vector of magnitude 6N6N. If the resultant has magnitude 63N6\sqrt{3}\text{N}, then magnitude of second vector isThe resultant of two vectors is perpendicular to first vector of magnitude 6N . If the resultant has magnitude 6 3 N ,

Options

  1. A62N6\sqrt{2}N
  2. B12N12N
  3. C93N9\sqrt{3}N
  4. D63N6\sqrt{3}N

Correct answer

B. 12N12N

Step-by-step solution

The resultant of two vectors is perpendicular to first vector of magnitude 6N . If the resultant has magnitude 6 3 N ,

BCosθ=6B Cos \theta = 6

BSinθ=63B Sin\theta = 6\sqrt{3}

B=62+(63)2=12\text{B} = \sqrt{{6}^{2} + {\left(6\sqrt{3}\right)}^{2}} = 12
Practice Mathematics in Physics on Quantrex Academy →

More from Mathematics in Physics

The density ρ of a uniform cylinder is determined by measuring its mass m , length l and… JEE Main 2026Four persons measure the length of a rod as 20.00 ~cm, 19.75 ~cm, 17.01 ~cm and 18.25 cm.… JEE Main 2026In an experiment the values of two spring constants were measured as k_ 1 =(10 ± 0.2) N /… JEE Main 2026Length, breadth and thickness of a strip having a uniform cross section are measured to… JEE Advanced 2025A quantity Q is formulated as X^ -2 Y^ +(3)/(2) Z^ -(2)/(5) · X, Y and Z are independent… JEE Main 2025A physical quantity C is related to four other quantities p, q, r and s as follows C=… JEE Main 2025A physical quantity Q is related to four observables a, b, c, d as follows : Q= ab ^4 ~cd… JEE Main 2025For an experimental expression y=(32.3 × 1125)/(27.4) , where all the digits are… JEE Main 2025 Full Mathematics in Physics list All NTA Abhyas JEE Main PYQs