Magnetism Question 72
Question: At a certain place the horizontal component of the earth’s magnetic field is B0 and the angle of dip is 45o. The total intensity of the field at that place will be
[MP PET 2000; Pb PET 2003]
Options:
A) B0
B) $ \sqrt{2},B _{0} $
C) 2 B0
D) $ B _{0}^{2} $
Show Answer
Answer:
Correct Answer: B
Solution:
$ B _{H}=B\sin \varphi \Rightarrow B=\frac{B _{H}}{\sin \varphi } $
$ \Rightarrow B=\frac{B _{o}}{\sin 45^{o}}=\sqrt{2}B _{0} $
BETA
