Which will be preffered large angle prism or small angle prism for obtaining spectrum.
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The correct answer could be - Smaller angle.
The angle in between the violet rays and the red rays of a spectrum is called as the Angle of dispersion. Since different rays have different wavelengths, they get dispersed at different angles when the white light is deviated through a prism forming a spectrum.
A prism has usually a positive dispersive power. A smaller angle means a smaller deviation of the rays, which gives a fine -pitch grating. When light is passed through a prism, the fine-pitched grating will give a larger free and accurate spectral range.
The angle in between the violet rays and the red rays of a spectrum is called as the Angle of dispersion. Since different rays have different wavelengths, they get dispersed at different angles when the white light is deviated through a prism forming a spectrum.
A prism has usually a positive dispersive power. A smaller angle means a smaller deviation of the rays, which gives a fine -pitch grating. When light is passed through a prism, the fine-pitched grating will give a larger free and accurate spectral range.
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