wiz-icon
MyQuestionIcon
MyQuestionIcon
16
You visited us 16 times! Enjoying our articles? Unlock Full Access!
Question

A deflection magnetometer is arranged in tanA position. When a bar magnet is placed deflection is observed to be 'θ' and period of oscillation of the needle is ‘X’. When the magnet is removed and magnetic needle is made to oscillate in presence of earth’s magnetic field then its period is ‘Y’, then XY is


A
tanθ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
cosθ
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
sinθ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
cosθ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A cosθ
τ=MBθ=Iα=>α=ω2θ
ωBres
X=k/Bres,Y=k/BH
X/Y=BH/Bres
Bres=BHsecθ(sinceBr=B2H+B2)
X/Y=cosθ

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon