CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Byju's Answer
Standard X
Chemistry
Covalent Bond
The earth rad...
Question

The earth radiates in the infra-red region of the spectrum. The spectrum is

correctly given by


A

Wien's law

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

Rayleigh jeans law

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

Planck's law of radiation

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

Stefan's law of radiation

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C

Planck's law of radiation


C


flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
Q. Name the prism required for obtaining the spectrum of infra red radiation
Q. Like the solar spectrum the spectra of stars show a continuous spectrum on which dark absorption lines are superimposed. The inner layer (called the photosphere) of the star emits radiations of all wavelengths, producing a continuous spectrum. When these radiations pass through the outer, relatively cooler, layer of the star, the radiation of certain wavelengths are selectively absorbed by this layer. This explains the dark lines in thespectrum of a star. The dark lines are characteristic of the substances present in the outer layer of the star.The surface temperature T of a star can be estimated by measuring the wavelengths λm at which the intensity of the emitted radiation is maximum and then using Wien's displacement law which states that λm x T = b where b is a constant called Wiens constant and the above relation is called Wiens Displacement Law which states that as the temperature increases, the maximum intensity of emission shifts (or is displaced) towards the shorter wavelengths. The value of constant b has been found experimentally to be 2.89 x 10−3mK .
In Wiens displacement law the SI unit of Wiens constant b is
Q. Like the solar spectrum the spectra of stars show a continuous spectrum on which dark aborption lines are superimposed. The inner layer (called the photosphere) of the star emits radiations of all wavelengthts, producing a continuous spectrum. When these radiations pass through the outer, relatively cooler, layer of the star, the radiations of certain wavelengths are selectively absorbed by this layer. This explains the dark lines in the spectrum of a star. The dark lines are charactreristic of the substances present in the outer layer of the star.The surface temperature T of a star can be estimated by measuring the wavelengths λm at which the intensity of the emitted radiation is maximum and then using Wiens displacement law which states that λm x T = b where b is a constant called Wiens constant and the above relation is called Wiens Displacement Law which states that as the temperature increases, the maximum intensity of emission shifts (or is displaced) towards the shorter wavelengths. The value of constant b has been found experimentally to be 2.89 x 10−3mK .
The dark lines in the solar spectrum are due to the
Q. State Kirchhoff's law of radiation and prove it theoretically.
Q. Like the solar spectrum the spectra of stars show a continuous spectrum on which dark absorption lines are superimposed. The inner layer (called the photosphere) of the star emits radiations of all wavelengths, producing a continuous spectrum. When these radiations pass through the outer, relatively cooler, layer of the star, the radiation of certain wavelengths are selectively absorbed by this layer. This explains the dark lines in the spectrum of a star. The dark lines are characteristic of the substances present in the outer layer of the star.The surface temperature T of a star can be estimated by measuring the wavelengths λm at which the intensity of the emitted radiation is maximum and then using Wien's displacement law which states that λm x T = b where b is a constant called Wiens constant and the above relation is called Wiens Displacement Law which states that as the temperature increases, the maximum intensity of emission shifts (or is displaced) towards the shorter wavelengths. The value of constant b has been found experimentally to be 2.89×10−3mK .
The spectrum of light received from a star is a

View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Introduction to Chemical Bonding
CHEMISTRY
Watch in App
explore_more_icon
Explore more
Covalent Bond
Standard X Chemistry
Join BYJU'S Learning Program
book_image
Solve
book_image
Textbooks
book_image
Question Papers
book_image
Install app
CrossIcon