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State four differences between reflection and total internal reflection.

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Total Internal Reflection : 

1. The entire light is reflected. 

2. There is no loss of energy. 

3. It takes place only when light passes from denser to rarer medium at an angle of incidence is greater than critical angle. 

4. The image is much brighter. 

Reflection : 

1. Only a part of light is reflected Rest is refracted and absorbed. 

2. The energy of reflected ray is less than incident ray. 

3. It takes place when light is incident on plane mirror from any medium at any angle of incidence. 

4. The image is less bright. 

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