The direction of magnetic field lines inside a bar magnet is
A. South to North
B. Random
C. Same as outside
D. North to South
Answer: Option A
Solution (By JKSSB Mock Tests)
Outside magnet, lines from North to South. Inside magnet, they go from South to North, forming closed loops. Magnetic field lines continuous, no start/end.
Explanation:
Pascal's law: pressure applied to a confined incompressible fluid is transmitted equally and undiminished in all directions. Hydraulic lift, hydraulic brakes work on this principle. P = F₁/A₁ = F₂/A₂.
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