After white light passes through a glass prism, its components fall at different positions on a screen. Why?

When a beam of white light is passed through a triangular glass prism, it gets dispersed into its component colours. Why do we get these colours ? In the given figure, the colours X and Y represent the extreme components of the spectrum. Identify X and Y.

A narrow beam PQ of white light passes through a glass prism ABC as shown in the diagram. Trace it on your answer sheet and show the path of the emergent beam as observed on the screen DE. (1) Write the name and cause of the phenomenon observed. (2) Where else in nature is this phenomenon observed ? (3) Based on this observation, state the conclusion which can be drawn about the constituents of white light.

When white light passes through prism, which colour of light will experience minimum deviation ?

........ light, while passing through a prism, does not disperse.

A ray of light passes through a prism in a principle plane the deviation being equal to angle of incidence which is equal to 2alpha . It is given that alpha is the angle fo prism and mu is the refractive index of the material of prism, then

A: When white light passes through lens then refraction of violet light is more than that of red light. R: For given lens, focal length of red light is more than that of violet light.

A beam of white light falling on a glass prism gets split up into seven colours marked 1 to 7 as shown in the diagram. (1) The colours at positions marked 3 and 5 are similar to the colour of the sky and the colour of gold (metal), respectively. Is the above statement made by a student correct or incorrect. Justify. (2) Which of the positions shown above correspond approximately to the colour of (a) a brinjal, (b) danger signal, (c) neel (Lll) (applied to clothes), (d) orange.

Find the equation of sphere which passes through (1, 0, 0) and has its centre on the positive direction of Y-axis and has radius 2.

In the above figure a narrow beam of white light is shown to pass through a triangular glass prism. After passing through the prism, it produces a spectrum XY on a screen. State the colour seen at (i) X and (ii) Y.

White light is passed through a prism of angle 5^@ . If the refractive indices for red and blue colours are 1.641 and 1.659 respectively, calculate the angle of deviation between them, also calculate the dispersive power.