i.) Out of blue and red light, which one is scattered more and why? [2 marks]
ii.) What is colour of danger signals? Why? [2 marks]
The blue colour of the sky is due to ____ of light.
- Scattering of sunlight
- Tyndall effect
At noon the sun appears white as:
light is least scattered
all the colours of the white light are scattered away
blue colour is scattered the most
red colour is scattered the most
Match the following statements with correct terms associated with it.
Statement Options(A)Light makes tiny particles visible due to(1)Scatteringscattering.(B)The effect of seeing an objects is retained by the(2)Dispersioneye for116thof a second.(C)Composite light splits up into component(3)Persistence of visioncolours.(D)Irregular and partial reflection of light(4)Tyndall effect
A-4, B-3, C-2, D-1
A-2, B-1, C-4, D-3
A-4, B-1, C-3, D-2
- A-2, B-3, C-4, D-1
Red color is used in danger signal because it scatters to a wider angle.
Why does the sun appear yellowish-white during the noontime?
Because sunlight has to travel relatively shorter atmospheric distance.
Because sunlight has to travel longer atmospheric distance.
Because only red and violet are scattered.
Because all the colours are scattered by the cloud.
In which of the following, scattering of light does not takes place?
Blue colour of the sky
Colour of deep sea
Reddening of the sun