JEE Mains · Physics · STD 11 - 10.1, thermonetry,thermal expansion and calorimetry
- JEE Mains 2022
- Medium
- MCQ
A \(100 \,g\) of iron nail is hit by a \(1.5\, kg\) hammer striking at a velocity of \(60\, ms ^{-1}\). \(............^{\circ}C\) will be the rise in the temperature of the nail if one fourth of energy of the hammer goes into heating the nail . [Specific heat capacity of iron \(=0.42\, Jg ^{-1}{ }\,^{\circ}C ^{-1}\) ]
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Answer & Solution
Correct Answer
(C) \(16.07\)
Step-by-step Solution
Detailed explanation
\(\frac{1}{2} \times 1.5 \times 60^{2} \times \frac{1}{4}=0.1 \times 420 \times \Delta T\)
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