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NEET PHYSICSUNITS AND MEASUREMENTSEasy

Question

Tesla is a unit for measuring:

A

Magnetic moment

B

Magnetic induction & Intensity

C

Magnetic field lines

D

Magnetic pole strength

Step-by-Step Solution

  1. Identify the Unit: 'Tesla' (symbol: T) is the derived SI unit for magnetic field (B\mathbf{B}), also known as magnetic flux density or magnetic induction.
  2. Verify with Sources: According to the SI derived units table, the tesla is defined as 1 T=1 Wb m−21 \text{ T} = 1 \text{ Wb m}^{-2} (Weber per square meter) or 1 N A−1 m−11 \text{ N A}^{-1} \text{ m}^{-1} .
  3. Analyze Options:
  • Magnetic moment: Measured in Joule per Tesla (J T−1\text{J T}^{-1}) or Ampere square metre (A m2\text{A m}^2) , .
  • Magnetic induction: Directly corresponds to the unit Tesla , . Note: While Magnetic intensity (H\mathbf{H}) typically has the unit Ampere per metre (A m−1\text{A m}^{-1}) in modern terminology , historically or loosely in older exam questions (like PMT 1993), the terms were sometimes grouped or used less rigorously. Since 'Magnetic induction' is definitely measured in Tesla, this is the correct choice among the options.
  • Magnetic field lines: This refers to a conceptual visualization, not a physical quantity with a unit.
  • Magnetic pole strength: Measured in Ampere metre (A m\text{A m}) .
  1. Conclusion: Tesla is the unit for Magnetic induction.

Exam Context & Concepts Covered

This question aligns with the NEET PHYSICS syllabus, specifically targeting concepts from UNITS AND MEASUREMENTS. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

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