Manipal MET2014PhysicsMagnetic Properties of Matter
A magnet makes 40 oscillations per minute at a place having magnetic field intensity B_H=0.1 10⁻⁵ . At another place, it takes 2.5 s to complete one vibration. The value of the earth's horizontal field at the place
Options
- A0.25 10⁻⁶ ~T
- B0.36 10⁻⁶ ~T
- C0.66 10⁻⁸ ~T
- D1.2 10⁻⁶ ~T
Correct answer
B. 0.36 10⁻⁶ ~T
Step-by-step solution
aligned & By using T=2 1 M B_H T₁ T₂ = (B_H )₂ (B_H )₁ & 60 / 40 2.5 = (B_H )₂ 0.1 10⁻⁵ & (B_H )₂=0.36 10⁻⁶ ~T aligned