Question

Difference between line spectrum and band spectrum.

Answer 1

Key Difference:

In Physics, a ‘line spectrum’ is a set of discrete wavelengths from gaseous atoms, whereas a ‘band spectrum’ is produced by molecules, which consist of a series of closely spaced lines separated by dark spaces called bands.

Line Spectrum

• Line spectrum is the result of the interactions of the quantum systems and a single photon.
• These systems are especially associated with atoms and sometimes with the molecules or atomic nuclei.
• Due to the presence of wavelengths, the spectrum of incandescent solids are considered to be continuous.

Band Spectrum

• Band spectrum is produced by molecules.
• They are the groups of lines which are closely spaced to one another. In appearance, they are in the form of band, hence the name 'BAND' spectrum.
• These spectra are characteristics of molecular gases or chemical compounds

Answer 2

Explanation:

a force of 5N act on a body.what is the acceleration produced in m/s^2,if the weight of the body is 9.8N