Rainbow 🌈 mind map and MCQ Properties of Light

Speed Up Science
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Rainbow 🌈 mind map Properties of Light


Rectilinear propagation of light - Light travels in straight line


pinhole camera based on this principle

Speed of light  The rate at which light travels is known as speed of light. It has maximum speed
in vacuum/air. When it goes to optically denser medium speed  of light decreases.


Speed of light and it's medium


Reflection of light-The phenomenon of returning of light in the same medium is called Reflection of light.

It is the reflection helping us to see things around us. The images we see in the mirror is just the Reflection



Reflection of light


Reflection by curved mirror 


Refraction of light - The bending of light when it passes from one medium to another this property of light it is used in number of devices like microscope magnifying lens etc.

                 



Total internal Reflection-  When light travels from denser medium to rarer medium beyond certain

    angle of incidence in place  of refraction reflection takes place. This property of light is called Total internal reflection. 
      Mirage  (false impression of pool of water in desert in hot day) falls under this.

 


Mirage


     dispersion of lightthe property of light where the white light splits into its constitutes seven colours is

called Dispersion of light

 Dispersion can be observed by prism. Rainbow natural phenomenon is the best example of

dispersion of light.




    scattering of light – Light rays get deviated from its straight path on striking dust or gas molecules,

water vapor etc.


Some effects are:


●Sun appears red in the morning but white at noon.

● Red colour used as danger signal



Rainbow 🌈 MCQ on Properties of Light 

 

1.Light travels in a straight line -

      Perpendicular propagation 
     
     
     
Explain:- Rectilinear propagation of light states- light travels in a straight path.

 

2. Speed of light is maximum in

     
     
     
     
Explain:- Speed of light is maximum in air / vacuum. 

 

3. -The phenomenon of returning of light in the same medium is called 

     
     
     
     
Explain:- Returning of light in same medium is Reflection of light. 

 

4. The bending of light when it passes from one medium to another

     A) Reflection of light 
     
     
     
Explain:-Bending of light when passes from one medium to another is Refraction of light. 

 

5.Mirage is the example of Refraction followed by

     
     
     
     scattering of light 
Explain:-Mirage is the example of atmospheric refraction followed by Total Internal Reflection. 

 

6.The property of light where the white light splits into its constitutes seven colours is called

     
     
     
     
Explain:-the property of light where the white light splits its constitutes seven colours is called Dispersion of light  .
.

 

7. Sun appears red in the morning but white at noon

     
     
     
     
Explain:- As red light scattered least, it travels longer distance. 
.



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