99 Percentile Qs Bank for JEE MainPhysicsMagnetic Properties of Matter
At a certain place a magnet makes 30 oscillations per minute. At another place where the magnetic field is double, its time period will be
Options
- A4 ~s
- B2 ~s
- C1 2 ~s
- D2 ~s
Correct answer
D. 2 ~s
Step-by-step solution
aligned T=2 & I M B_H T₁ T₂ & = (B_H )₂ (B_H )₁ T₂ & =T₁ (B_H )₁ (B_H )₂ n₁ & =30 oscillation / min n₁ & = 1 2 oscillation / s T₁ & =2 ~s T₂ & =2 B_H 2 B_H = & 2 1 2 = 2 ~s aligned