# How do you find the dispersive power of a prism using a spectrometer?

## How do you find the dispersive power of a prism using a spectrometer?

To determine the Dispersive power of prism :

1. Rotate the vernier table so as to fall the light from the collimator to one face of the prism and emerged through another face.
2. Turn the telescope to make the slit coincide with telescope cross wire.
3. The emerged ray has different colors.

## How do you put a prism on spectrometer for angle of prism experiment?

Performing simulator

1. Click Place Prism button.
2. Place the edge of prism, pointed towards collimator.
3. Move the telescope using Telescope slider, up to see the slit on side.
4. Move the telescope in the opposite direction and do the same.
5. Find the difference between two angle ie 2θ.

What type of light do you use in dispersive power experiment?

In the experiment, we need to produce a parallel beam of rays to be incident on the prism. This is done with the help of a collimator.

Why are the lines and circle drawn on the prism table?

38. Why are the concentric circles drawn on the prism table? Ans. These help us in placing the prism on the table such that axis of rotation of the table passes through the centre of the circumscribing circle of the prism.

### What is the dispersive power of a prism?

Dispersive power of prism is defined as the measure of the difference in refraction of the light of the highest wavelength and the lowest wavelength that enters the prism. The dispersive power of the prism can also be expressed in terms of the angle between the two extreme wavelengths.

### What is dispersive power formula?

Now dispersive power (ω) of the material is defined as (ω)=δyδv−δr . Thus ω=(μ−1)A(μ−μ)A=(μ−1)(μ−μ)

What is the dispersive power of prism?

On what factors does the dispersive power of a prism depend?

Dispersive power of a prism depends only on the nature of material of the prism. However angular dispersion and mean deviation, both depend on angle of prism.

#### How is a spectrometer used?

spectrometer, Device for detecting and analyzing wavelengths of electromagnetic radiation, commonly used for molecular spectroscopy; more broadly, any of various instruments in which an emission (as of electromagnetic radiation or particles) is spread out according to some property (as energy or mass) into a spectrum …

#### What is the value of dispersive power of prism?

0
Dispersive power of the material of a prism is 0.

What is dispersive power *?

Answer: Dispersive power of prism is defined as the measure of the difference in refraction of the light of the highest wavelength and the lowest wavelength that enters the prism. The dispersive power of the prism can also be expressed in terms of the angle between the two extreme wavelengths.

How to find the dispersive power of a prism?

FORMULA: The dispersive power of the prism is given by b g av1 w Where,  2 b g av sin 2 sin 2 B b A D A sin 2 sin 2 g G A D A A = angle of the prism D g= angle of minimum deviation for green colour D b = angle of minimum deviation for blue colour THEORY:

## What is dispersion of light in prism?

Dispersion of light:- when a ray of white light passes through a prism it splits up into its constituents colors this phenomenon of splitting of white light its constituent color is called dispersion . Angle of prism: The angle between two surfaces of the prism is known as the refracting angle or angle of prism.

## What is a spectrometer?

INTRODUCTION:-  Spectrometer. It is a compact apparatus for obtaining a pure spectrum. It is used for the study of spectra and for finding the refractive index of the material in the form of prism.  It has three parts  1.The collimator. (C).

What is dispersion of white light?

6. Dispersion of light:- when a ray of white light passes through a prism it splits up into its constituents colors this phenomenon of splitting of white light its constituent color is called dispersion . Angle of prism: The angle between two surfaces of the prism is known as the refracting angle or angle of prism.

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