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A 100 g of iron nail is hit by a 1.5 kg hammer striking at a velocity of 60 ms –1 . What 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 °C –1 ]

1. 675°C
2. 1600°C
3. 16.07°C
4. 6.75°C

Correct answer: 16.07°C

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