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JEE Main Physics question

PhysicsThermodynamicsJEE Main

An engineer claims to have made an engine delivering 10 kW power with fuel consumption of 1 g s⁻¹. The calorific value of the fuel is 2 kcal g⁻¹. This claim is [MHT-CET 2006]

Answer: (B)

Solution

Input power = 1 g/s × 2 kcal/g = 2×10³×4.2 J/s ≈ 8400 W = 8.4 kW. Since the claimed output

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Question ID VK-153632