Prism and Dispersion of Light

When white light falls on prism, the colour of emergent ray towards base of the prism is-

If the phenomenon of dispersion doesn't exist, which of the following won't be observed?

The wavelength of red light is _____.

Any light that gives a spectrum similar to that of sunlight is called _____.

Splitting of white light into seven colours on passing through the glass prism is called _____. 

 _____the speed of light in the glass prism, makes the light bend more.

 A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in figure. In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?

_____ is caused by dispersion of sunlight by tiny water droplets, suspended in the atmosphere after a rainfall.

List the three phenomena of light responsible for the formation of the rainbow in the sky.

The refractive index assumes entrance of light from a _______.

White light is a mixture of_______.

Rainbow colour formation in jar experiment occurs due to density variation of liquids.

Red is the outermost layer of rainbow.

Rainbow consists of _____ colours.

Light is in the visible range of spectrum.

Newton's disc demonstrates that _____ light consists of seven colours.

Newton's disc consists of seven colours in a rainbow.

Which of the following is a primary colour in a Newton disk?

A prism ABC, with base BC, is placed in four different orientations as shown. A narrow beam of white light is incident on the prism as shown. In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?

Can dispersion of light take place through a glass slab? Find out.