What is a spectrum Class 11?
Atomic spectra is the study of atoms (and atomic ions) through their interaction with electromagnetic radiation. We all know about the refraction of light.
What is spectrum and its types?
When electromagnetic radiation is passed through a prism or grating it is split up and forms a collection of lines representing different wavelengths. This is called spectrum. The spectra can be divided into two types viz., emission and absorption spectra.
What is emission spectra 11th chemistry?
When the radiations emitted from some source eg: from the sun or by passing electric discharge through a gas at low pressure or by heating some substance to high temperature is passed directly through the prism and then received on the photographic plate, the spectrum obtained is called emission spectrum.
What is a spectrum in chemistry?
A spectrum is a graph that shows the intensity of radiation at different wavelengths or the response of the atomic or molecular system to different wavelengths of the radiation.
What exactly is spectrum?
A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary, without steps, across a continuum. The word was first used scientifically in optics to describe the rainbow of colors in visible light after passing through a prism.
What is spectrum How is spectrum obtained Class 11?
When light coming from a source is dispersed by a prism, light of different wavelength are deviated through different angles and get separated. A collection of dispersed light giving its wavelength composition is called a spectrum.
What is spectrum explain briefly?
What is normal spectrum?
a representation of a spectrum arranged upon conventional plan adopted as standard, especially a spectrum in which the colors are spaced proportionally to their wave lengths, as when formed by a diffraction grating.
Why do we get spectrum?
The refractive index of the material of the prism is different for different colours. White light is composed of seven colours. So, the rays of each colour emerge along different paths and become distinct. Hence, we get a spectrum of seven different colours.
When is a spectrum obtained from a source?
When the radiations emitted from some source eg: from the sun or by passing electric discharge through a gas at low pressure or by heating some substance to high temperature is passed directly through the prism and then received on the photographic plate, the spectrum obtained is called emission spectrum.
What are the spectra of a Bunsen flame?
On passing through the prism, red colour with the longest wavelength is deviated least while violet colour with shortest wavelength is deviated the most. 2) Line Spectra. When some volatile salt is placed in the bunsen flame or an electric discharge is passed through a gas at low pressure, light is emitted.
Which is the most continuous colour in the spectrum?
These colours are so continuous that each of them merges into the next. Hence the spectrum is called continuous spectrum. On passing through the prism, red colour with the longest wavelength is deviated least while violet colour with shortest wavelength is deviated the most.