Enrico Fermi is most famously recognized for his pioneering achievement in building the world's first: MCQ with Answer and Explanation
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Question #1
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Assertion (A): Fuse wire has high resistance and low melting point. Reason (R): It must melt to break circuit on overload.
Question #2
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A particle moves along a circular path of radius r with constant speed v. Its acceleration is:
Correct Answer: Option C
Explanation:
In uniform circular motion, speed is constant but velocity direction changes continuously, producing centripetal acceleration. Magnitude a = v²/r, direction always towards the center of the circle. This acceleration changes velocity direction without altering speed. Tangential acceleration would change speed, but here speed is constant. Formula derivation: From vector analysis of velocity change over small time interval. Exam tip: Remember 'centripetal' means 'center-seeking'; this concept is fundamental for rotational dynamics questions in competitive exams.
In uniform circular motion, speed is constant but velocity direction changes continuously, producing centripetal acceleration. Magnitude a = v²/r, direction always towards the center of the circle. This acceleration changes velocity direction without altering speed. Tangential acceleration would change speed, but here speed is constant. Formula derivation: From vector analysis of velocity change over small time interval. Exam tip: Remember 'centripetal' means 'center-seeking'; this concept is fundamental for rotational dynamics questions in competitive exams.
Question #3
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The boiling point of water on Kelvin scale is
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