What is Tyndall effect?
What is Tyndall effect?
Official answer
The phenomenon of scattering of light by colloidal particles (or minute particles in a heterogeneous mixture like the earth's atmosphere) which makes the path of the light beam visible is called the Tyndall effect.
Marking scheme
- 1.Definition of Tyndall effect (scattering of light by colloidal/suspended particles making the path of light visible) (1 mark)
Hint
Think about what happens when a beam of sunlight enters a dusty room through a small hole.
Quick oral answer
The Tyndall effect is the scattering of light by colloidal or very fine suspended particles, which makes the path of the light beam visible.
Common mistakes
- 1.Confusing Tyndall effect with simple refraction or dispersion of light.
- 2.Forgetting to mention that the scattering makes the path of the light beam visible.
Analysis and explanation
When a beam of light passes through a medium containing suspended particles (like smoke, tiny water droplets, or dust in the air), the light rays strike these particles and scatter in all directions. This scattering makes the path of the light beam visible to our eyes. This is known as the Tyndall effect.
Interesting facts
The earth's atmosphere is a heterogeneous mixture of minute particles including smoke, water droplets, and dust. This is why we can see beautiful sunbeams filtering through dense forest canopies.
Question details
Q2 of 36 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2011
- Section
- Section A
- Marks
- 1
- Type
- Very Short Answer
- Chapter
- The Human Eye and the Colourful World
- Topic
- Scattering of Light
- Bloom's level
- Remembering
- Syllabus topic
- Tyndall Effect
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2011?
This question carries 1 mark in the CBSE Class 10 Science 2011 examination.
Which chapter does this question come from in Science?
This question is from the chapter "The Human Eye and the Colourful World" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Scattering of Light" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2011 paper?
This is a Very Short Answer question from Section A in the CBSE Class 10 Science 2011 paper.