Question
Name and define the modes of heat transfer.

Answer


The three modes of heat transfer are conduction, convection and radiation.
1. Conduction is the mode of heat transfer within a body or between two bodies in contact, from a region of high temperature to a region of lower temperature without the migration of the particles of the medium.
2. Convection is the mode of heat transfer from one part of a fluid to another by the migration of the particles of the fluid.
3. Radiation is the mode of heat transfer by electromagnetic waves / quanta.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The safest way to protect yourself from lightening is to be inside a car. Justify.
What are the functions of a dielectric in a capacitor?
'If $\mathrm{r}=1$, then it is a white body'. Is this true ? Explain.
A body cools from \(80^{\circ} C\) to \(70^{\circ} C\) in 5 minutes and to \(62^{\circ} C\) in the next $5$ minutes. Calculate the temperature the surroundings.
Two long parallel wires going into the plane of the paper are separated by a distance $R$, and carry a current I each in the same direction. Show that the magnitude of the magnetic field at a point $P$ equidistant from the wires and subtending angle $\theta$ from the plane containing the wires, is $B =\frac{\mu_0}{\pi} \frac{I}{R} \sin 2 \theta$ What is the direction of the magnetic field?
Light of wavelength $650 nm$ falls on the objective of a microscope having total angle of angular w separation as $60^{\circ}$. Calculate the resolving power of the microscope. [Refractive index of air =1]
Explain back emf in a motor.
In a biprism experiment, light of wavelength 5200Å is used to obtain an interference pattern on the screen. The fringe width changes by \(1.3 mm\) when the screen is moved towards the biprism by \(50 cm\). Calculate the distance between the two virtual images of the slif.
What is the magnetic moment of an electron due to its orbital motion?
The equation of simple harmonic progressive wave is given by \(Y =0.05 \sin \pi\left[20 t-\frac{x}{6}\right]\), where all quantities are in S.I. units, Calculate the displacement of a particle at \(5 m\) from origin and at the instant 0.1 second.