NCERT Class 10 Science Activity 11.2 The Human Eye
and The Colourful world| The Human Eye and The Colourful world Activity 11.2
Solution
In this article, we will discuss activity
11.2 class 10 science. You will find a complete explanation with a
conclusion.
After studying this activity 11.2 Class 10
Science The Human Eye and The Colourful World, you will be able to solve
Questions of Chapter 11 The Human Eye and The Colourful world.
Activity 11.2 Class 10 Science
· Take
a thick sheet of cardboard and make a small hole or narrow slit in its middle.
· Allow
sunlight to fall on the narrow slit. This gives a narrow beam of white light.
· Now
take a glass prism and allow the light from the slit to fall on one of its
faces.
· Turn
the prism slowly until the light that comes out of it appears on a nearby
screen.
· What
do you observe? You will find a beautiful band of colours. Why does this
happen?
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Observation Activity 11.2 Class 10 Science
When a beam of white light is allowed to fall through a
slit on the face XY of a triangular glass prism XYZ. On turning the glass prism
slowly we got a seven colours band on screen. This band of seven colours of
light is called ‘spectrum’.
Explanation Activity 11.2 Class 10 Science
When a beam of light passes through a glass prism, it
splits into seven colours. This phenomenon
is called ‘Dispersion’.
This happens because seven colours of light bend
through different angles with respect to the incident ray.
The red light bends the least and violet light bends the
most.
The seven colours are violet, indigo, blue, yellow, orange
and red(VIBGYOR)
Conclusion Activity 11.2 Class 10 Science
Through activity 11.2 class 10 science, we can learn
that white light is composed of seven colours. The phenomenon of splitting white light into its component colours is known as dispersion of light.
Related Topic for you
1. Next activity - Activity 11.3 Class 10 Science
2. Previous activity- Activity 11.1 Clas 10 Science
3. NCERT Solutions of Chapter 11
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