How does a prism spectrometer work?

Explain emission and absorption spectra ( Diagram not necessary)

Discuss the action of a Bainbridge mass spectrometer to determine the isotopic masses.

The collimator in a spectrometer is used

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

An astronomical telescope has an eyepiece of focal length 5cm. If magnification produced is 14 in normal adjustment, then what is the length of telescope?

Spectrometer is used to measure: