Give an example of a phenomenon where Tyndall effect can be observed.
Give an example of a phenomenon where Tyndall effect can be observed.
Official answer
A common example of the Tyndall effect is the visible path of sunlight as it passes through the canopy of a dense forest, where tiny water droplets in the mist scatter the light.
Marking scheme
- 1.1 mark for providing a valid example such as forest canopy, sunlight in a dusty room, or car headlights in fog.
Hint
Think about how light looks when it enters a dark, dusty room or a foggy forest.
Quick oral answer
An example is sunlight passing through a canopy of trees. The water droplets in the air scatter the light, making the beam visible.
Common mistakes
- 1.Confusing scattering with simple reflection or refraction.
- 2.Giving an example of a true solution (like salt in water) which does not show the Tyndall effect.
Analysis and explanation
The Tyndall effect is the scattering of a beam of light by medium particles (colloids or very fine suspensions). In a forest, the mist contains water droplets that act as colloidal particles, making the path of light visible to the observer.
Interesting facts
The Tyndall effect is why the sky sometimes appears hazy and why flour suspended in water looks cloudy when a flashlight is shone through it.
Question details
Q2 of 41 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2011
- Section
- Section A
- Marks
- 1
- Type
- Very Short Answer
- Chapter
- Chemical Reactions and Equations
- Topic
- Colloids and Scattering
- Bloom's level
- Remember
- Syllabus topic
- Scattering of Light
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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 "Chemical Reactions and Equations" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Colloids and Scattering" 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.