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JEE Advanced Paper 2 2024 Paper

PART-II : PHYSICS

SECTION 1

• This section contains FOUR (04) questions.
• Each question has FOUR options (A), (B), (C) and (D). ONLY ONE of these four options is the correct answer.

Question : 4

Total: 51

A thin stiff insulated metal wire is bent into a circular loop with its two ends extending tangentially from the same point of the loop. The wire loop has mass m and radius r and it is in a uniform vertical magnetic field B0, as shown in the figure. Initially, it hangs vertically downwards, because of acceleration due to gravity g, on two conducting supports at P and Q. When a current I is passed through the loop, the loop turns about the line PQ by an angle θ given by

tan‌θ=πrIB0∕(mg)
tan‌θ=2πrIB0∕(mg)
tan‌θ=πrIB0∕(2mg)
tan‌θ=mg∕(πrIB0)

Validate

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