railway RRB Technician Grade 1 Mock Test 2024 Physics Thermal Properties of Matter Heat transfer

How much time will take a 3 kW immersion rod to raise the temperature of 2 litres of water from 40°C to 60°C? (Specific heat of water c = 4.18 x 10³ J kg °C^-1)

1

72.16 s

2

55.73 s

3

67.89 s

4

74.98 s

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