Question

Objective Questions
Choose the correct option.
1. Two bodies are placed in contact. Heat will
flow between them
(a) only if they are at different temperatures
(b) even if they are at the same temperature
(c) only if they have different amounts of
heat energy
(d) in more than one of the above situations
2. Which of the following temperatures is not
used as a fixed point on any temperature
scale?
(a) 0°C
(b) 0 °F
(c) 100 °C
(d) 212 F
3. Which of the following processes can occur
at all temperatures?
(a) Melting of a solid
(b) Freezing of a liquid
(c) Evaporation of a liquid
(d) Boiling of a liquid
4. When a solid is heated, the increase in its
volume does not depend on its
(a) initial volume
(b) rise in temperature
(c) material
(d) shape
5. A convection current is set up in a fluid
because of a difference in
(a) temperature (b) density
(c) volume
(d) all of these​

Answer 1

Answer:

Heat is a form of energy that gets transferred from one medium or object to another medium/object. Suppose if we a colder body and a hotter body and if it brought in contact, the heat gets transferred from the hotter body to colder body until the system of hotter & colder attains equilibrium.

When two bodies at different temperatures are placed in thermal contact with each other, heat flows from the body at a higher temperature until they both acquire the same temperature. Assuming that there is no loss of heat to the surroundings, then The heat lost by the hotter body will be equal to the heat gained by the colder body.

option D is correct