Question

1.Heat always flows from a larger object to a smaller object 2 Reason Various modes by which heat can flow are conduction, convection and radiation. write True or false​

Answer 1

Answer:

Correct option is

A

True

By the Second law of thermodynamics..the heat flows from an higher to lower region in terms of entropy.(Entropy is the measurement of order of disorderness of a system).The entropy of a hot body is more than that of a cold one.

energy will always be transferred from the hotter to the cooler object. The objects will exchange thermal energy, until thermal equilibrium is reached,

Hence statement is true

Answer 2

Statement 1 is false and statement 2 is true.

Explanation:

Heat flows from higher temperature to lower temperature.

Temperature  

• A measure of the average kinetic energy of the particles in a sample of matter, expressed in terms of units or degrees designated on a standard scale.

Heat

• Heat is simply the potential energy stored in the bonds that hold particles within the object together.  

• This transfer of energy occurs because of differences in the average translational kinetic energy per molecule in the two materials.

Heat flow occurs through three modes: conduction, convection and radiation.

• Conduction is a process in which transfer of heat takes place between objects by direct contact.

• Convection refers to the form of heat transfer in which energy transition occurs within the fluid.

• Radition alludes to the mechanism in which heat is transmitted without any physical contact between objects.