what is emission spectrum
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Answer:
for emission spectrum we should use white light, discharge to filled with gas or a piece of substance at high temperature, are the source of light which is directly passed through prism and split in different Bright Line with dark bands.
The spectrum produced by the emitted radiation is known as emission spectrum.
1. This spectrum corresponds to liberation of energy when an excited electron returns back to ground state.
Emission spectrum is of two types.
1. Continuos spectrum: When white light passes through a prism it dissociates into seven colours. This spectrum is called continuous spectrum.
2. Discontinuos spectrum: Discontinuos spectrum is of two types.
a) Line spectrum: The spectrum with sharp and distinct lines. It is given by gaseous atoms.
b) Band spectrum: The spectrum very closely spaced lines is known as band spectrum. It is given by molecule.