Which of the violet and red lights will be deviated more by a prism and why?

Out of blue and red light,which is devated more by a prism?Give reasons.

Write deviation formula for prism.

Violet colour is seen at te bottom of the spectrum,when white light is dispersed by a prism.Why?

Out of white phosphorus and red Phosphorus, which one is More reactive and why?

Will the focal length of a lens for red light be more, same or less than that for blue light?

Name the factors on which the deviation produced in the path of a ray oflight by a prism depends.

Prism A prism is a portion of transparent refracting medium bounded by two plane surfaces inclined to each other at a certain angle, and the angle between the refracting faces is called angle of the prism denoted by A. The deviation produced by the prism is maximum for violet (delta_v) and minimum for red (delta_r) colour. The deviations suffered by a ray in passing through a small angled prism is