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JEE Main 202120 JulyEvening Shift
Exam
JEE Main
Year
2021
Date
20 July
Shift
Evening Shift
Subject
Physics
Chapter
Magnetic Properties of Matter

JEE Main 2021 · 20 July · Evening Shift · Physics · Magnetic Properties of Matter

At an angle of 30 ° to the magnetic meridian, the apparent dip is...

At an angle of 30°30 ° to the magnetic meridian, the apparent dip is 45°.45 ° . Find the true dip:

Options

  1. Atan⁡−13\tan^{- 1}\sqrt{3}
  2. Btan⁡−113\tan^{- 1}\dfrac{1}{\sqrt{3}}
  3. Ctan⁡−123\tan^{- 1}\dfrac{2}{\sqrt{3}}
  4. Dtan⁡−132\tan^{- 1}\dfrac{\sqrt{3}}{2}

Correct answer

D. tan⁡−132\tan^{- 1}\dfrac{\sqrt{3}}{2}

Step-by-step solution

Atan \delta = {tan \delta}^{'}cos \theta</p><p></p><p>= \tan 45 ° \cos 30 °</p><p></p><p>tan\delta = 1 \times \dfrac{\sqrt{3}}{2}</p><p></p><p>\delta = \tan^{- 1}\left(\dfrac{\sqrt{3}}{2}\right)

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