JEE Main 2023 · 30 January 2023 · Morning

Based upon JEE Main 2023 — 30 January Morning — full-length mock test

75 questions · 180 minutes · the real marking · built upon the real session paper, question by question. Solve one below, then take the whole paper on the real clock.

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This paper

What you sit down to

Questions: 75 · 25 per subject
Time: 180 minutes, one sitting
Marking: +4 / −1 on A · +4 / 0 on B
Marks: 300

Physics · Section A + Section B100 marks
Chemistry · Section A + Section B100 marks
Mathematics · Section A + Section B100 marks

After you submit: your score on the real marking, section-wise analysis, every question with its worked solution, and a concept-by-concept report — in English, हिन्दी, ગુજરાતી, मराठी, தமிழ் or తెలుగు.

Based upon

Built upon the Based upon JEE Main 2023 — 30 January Morning paper. Full credit to the source — EduPeak adds the real clock, the marking engine, the worked solutions and the report.

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PhysicsMCQ · +4 / -1

A massless square loop of wire of resistance

10 Ω

, supporting a mass of

1

g, hangs vertically with one of its sides in a uniform magnetic field of

1 0^{3}

G, directed outwards in the shaded region. A dc voltage

V

is applied to the loop. For what value of

V

will the magnetic force exactly balance the weight of the supporting mass of

1

g? (If sides of the loop

= 10

cm,

g = 10 m s^{- 2}

)

A square loop of wire hangs vertically. Its upper horizontal side lies inside a shaded square region of uniform magnetic field pointing out of the page, drawn as a regular array of dots. The rest of the loop hangs below that region, a dc source marked V is inserted in the right-hand vertical wire, and a small mass marked m is suspended from the bottom of the loop.

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About this paper

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