SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Amount of Energy needed to raise 1Kg of a substance by 1 C
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Amount of Energy needed for 1Kg of a substance to change state
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Either A or B
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None of the above
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Detailed explanation-1: -The amount of heat required to raise the temperature of 1kg of a substance by 1∘C is called the latent heat of the substance.
Detailed explanation-2: -The SI unit of specific heat capacity is joule per kelvin per kilogram, J⋅kg−1⋅K−1. For example, the heat required to raise the temperature of 1 kg of water by 1 K is 4184 joules, so the specific heat capacity of water is 4184 J⋅kg−1⋅K−1.
Detailed explanation-3: -The specific heat represents the amount of energy required to raise 1 kg of substance by 1oC (or 1 K), and can be thought of as the ability to absorb heat. The SI units of specific heats are J/kgK (kJ/kgoC). Water has a large specific heat of 4.19 kJ/kgoC compared to many other fluids and materials.
Detailed explanation-4: -The specific heat of a substance is the amount of heat required to raise the temperature of one kilogram of the substance by one degree Celsius.