GENERAL KNOWLEDGE

GK

PHYSICS

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What relationship exists between the specific heat and the amount of heat transferred?
 A Direct proportionality B Direct square proportionality C Inverse proportionality D Inverse square proportionality
Explanation:

Detailed explanation-1: -Heat Transfer and Temperature Change In the SI system, the specific heat is numerically equal to the amount of heat necessary to change the temperature of 1.00 1.00 kg of mass by 1.00 ° C 1.00 ° C . The SI unit for specific heat is J/ ( kg × K ) J/ ( kg × K ) or J/ ( kg × °C ) J/ ( kg × °C ) .

Detailed explanation-2: -Reason: Specific heat of a substance is directly proportional to change of heat and inversely proportional to change in temperature.

Detailed explanation-3: -Thermal energy is directly proportional to the change in temperature of the object. Heat is the form of thermal energy. The hotter the substance, the more will be its thermal energy. The rise of thermal energy by increasing the temperature is due to the faster movements of atom and molecules of the substance.

Detailed explanation-4: -The overall heat transfer is dependent on the geometry of the system and the different thermal resistance. The overall heat transfer coefficient’s notation is U-factor. The heat transfer rate Q is proportional to the overall heat transfer coefficient in direct relation.

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