MHT CET20242 May 2024Morning ShiftPhysicsMagnetic Effects of CurrentActual
At certain place a magnet makes 30 oscillations per minute. At another place if the magnetic induction is increased by two times the magnetic induction at first place, then the time period of same magnet will be
Options
- A2 3 ~s
- B2 3 ~s
- C3 2 ~s
- D3 ~s
Correct answer
A. 2 3 ~s
Step-by-step solution
T=2 I M B T 1 B Given n ₁=30 osc. / min T ₁=2 ~s T ₂ ~T ₁ = B ₁ ~B ₂ Now, B ₂= B ₁+2 ~B ₁=3 ~B ₁ T ₂ ~T ₁ = B ₁ 3 ~B ₁ = 1 3 ~T ₂= 1 3 2= 2 3 ~s