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Solution


Q.

Read the passage carefully and answer the following questions from (i) to (v).

Light is a form of energy that produces in the sensation of sight. Reflection of light is the phenomenon of bouncing back of light in the same medium on striking the surface of any object.

The two laws of reflection are the incident ray, the reflected ray and the normal (at the point of incidence), all lie in the same plane and the angle of reflection (r) is always equal to the angle of incidence (i). Refraction of light is the phenomenon of change in the path of light in going from one medium to another.

 

(i) Mirage is caused due to:
1 total Internal Reflection of light by the various layers of air  
2 illusion of the presence of water  
3 result of refraction of light from a non uniform medium  
4 during sunny days when driving on a roadway  

Ans.

(1)