English Medium Class 10 - CBSE Question Bank Solutions for Science

In the figure given alongside, a narrow beam of white light is shown to pass through a triangular glass prism. After passing through the prism, it produces a spectrum YX on the screen.

1. State the colour seen
   1. at X, and
   2. at Y.
2. Why do different colours of white light bend through different angles with respect to the incident beam of light?

In the figure given alongside, a narrow beam of white light is shown to pass through a triangular glass prism. After passing through the prism, it produces a spectrum YX on the screen. 

Why do different colours of white light bend through different angles with respect to the incident beam of light?

Draw a diagram to show how white light can be dispersed into a spectrum by using a glass prism. Mark the various colours of the spectrum.

Describe how you could demonstrate that white light is composed of a number of colours.

How could you show that the colours of the spectrum combine to give white light?

Which is refracted most by a prism : red light or violet light? Explain why?

Draw a diagram to show the refraction of light through a glass prism. On this diagram, mark
(i) incident ray
(ii) emergent ray, and
(iii) angle of deviation.

What is a rainbow?

 What acts as tiny prisms in the formation of a rainbow?

 Name the process which is involved in the formation of a rainbow.

What are the seven colours seen in a rainbow?

A beam of white light is shone onto a glass prism. The light cannot be:
(a) deviated
(b) dispersed
(c) focused
(d) refracted

A beam of white light falls on a glass prism. The colour of light which undergoes the least bending on passing through the glass prism is:
(a) violet
(b) red
(c) green
(d) blue

The colour of white light which suffers the maximum bending (or maximum refraction) on passing through a glass prism is:
(a) yellow
(b) orange
(c) red
(d) violet

Which of the following colour of white light is least deviated by the prism?
(a) green
(b) violet
(c) indigo
(d) yellow

The colour of white light which is deviated the maximum on passing through the glass prism is:
(a) blue
(b) indigo
(c) red
(d) orange

The splitting up of white light into seven colours on passing through a glass prism is called ______.

Which of the following coloured light has the least speed in glass prism?
(a) violet
(b) yellow
(c) red
(d) green

The coloured light having the maximum speed in glass prism is ______.