MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Tyndall Effect

ntdefine stef...

Question

ntdefine stefan's law and stefan-boltzmann law ?n

Open in App

Solution

Suggest Corrections

thumbs-up

0

Similar questions

Q. Stefan-Boltzmanns Law for a perfect black body is represented by

Q. The dimensions of Stefan-Boltzmann constant

σ

can be written in terms of Planck's constant

h

, Boltzmann constant

K_{B}

and the speed of light

c

σ = h^{α} K_{B}

^{β} c^{γ}

Q. Which of the following statements about Maxwell-Boltzmann law of distribution of molecular speeds are correct?

Q. All bodies emit heat energy from their surfaces by virtue of their temperature. This heat energy is called radiant energy of thermal radiation. The heat that we receive from the sun is transferred to us by a process which, unlike conduction or convection, does not require the help of a medium in the intervening space which is almost free of particles. Radiant energy travels in space as electromagnetic spectrum. Thermal radiations travel through vacuum with the speed of light. Thermal radiations obey the same laws of reflection and refraction as light does. They exhibit the phenomena of interference, diffraction and polarization as light does.
The emission of radiation from a hot body is expressed in terms of that emitted from a reference body (called the black body) at the same temperature. A black body absorbs and hence emits radiations of all wavelengths. The total energy E emitted by a unit area of a black body per second is given by

E = σ T^{4}

where T is the absolute temperature of the body and

σ

is a constant known as Stefans constant. If the body is not a perfect black body, then

E = ε σ T^{4}

ε

is the emissivity of the body.
From stefan-Boltzmann law, the dimensions of Stefans constant

σ

How is M related to N ?

Statement I. P, who has only two kids, M and N, is the mother-in-law of Q , who is sister-in-law of N.

Statement II. R, the sister-in-law of M, is the daughter-in-law of S, who has only two kids, M and N.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Properties of Colloids

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon