Convection
Convection: Overview
This topic covers concepts, such as, Thermal Convection, Free Convection, Forced Convection, Land and Sea Breezes, Convection Relation & Monsoons etc.
Important Questions on Convection





What causes a sea-breeze near a large body of water?


What is the reason for the occurrence of land breeze and sea breeze?


The convection current which arises when equatorial and polar regions of the earth receive unequal solar heat is called as:

Choose the method of heat conduction which could be affected by gravity?

The equatorial and polar regions of the earth receive unequal solar heat. The convection current arising due to this is called:

Which of the following process does not occur through convection

A metal is heated in a furnace where a sensor is kept above the metal surface to read the power radiated () by the metal. The sensor has a scale that displays , where is a constant. When the metal surface is at a temperature of , the sensor shows a value . Assume that the emissivity of the metallic surface remains constant. What is the value displayed by the sensor when the temperature of the metal surface is raised to ?

A liquid of mass m and specific heat c is heated to a temperature 2T. Another liquid of mass and specific heat 2c is heated to a temperature T. If these two liquids are mixed, the resulting temperature of the mixture is

Two liquids and are at When mixed in equal masses the temperature of the mixture is found to be . Their specific heats are in the ratio of

Assertion: In a room containing air, heat can go from one place to another by radiation only.
Reason: In convection, heat is transferred from one place to another by actual motion of heated material.

Statement 1 : A hot iron bar placed under a running tap loses heat by convection.
Statement 2 : Convection involves flow of matter within a fluid due to unequal temperature of its parts.

Which one of the following processes depends on gravity?

Which one of the following processes depends on gravity?
