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CBSE 11 Physics
U4
Item 2

Multiple choice·Standard multi-step (3/5)·No calculator

Difficulty guide

The label describes the problem, not your ability.

1/5 - Foundational

Warm-up setup; checks one basic idea.

2/5 - Routine exam skill

Normal syllabus skill; usually one main rule or interpretation.

3/5 - Standard multi-step

Exam-style problem with multiple steps or a common trap.

4/5 - Hard exam skill

High-end exam problem; combines methods carefully.

5/5 - Challenge

Stretch problem beyond normal exam pressure.

Question

For a body tied to a string and moving in a vertical circle of radius

2\text{ m}

, the minimum speed at the bottom for completing the circle is

Choose an answer

10\text{ m s}^{-1}

20\text{ m s}^{-1}

5\text{ m s}^{-1}

\sqrt{20}\text{ m s}^{-1}

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