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Questions
Mention one difference between reflection of light from a plane mirror and total internal reflection of light from a prism.
Mention the differences between the total internal reflection of light from a prism and the reflection of light from a plane mirror.
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Solution
| Sr. No. | Reflection of light from a plane mirror | Total internal reflection of light from a prism |
| 1. | A part of the incident ray of light is reflected, and the remaining is refracted and absorbed. | The incident ray of light is totally reflected back into the denser medium. |
| 2. | Reflection occurs when the ray of light falls on a plane mirror at any angle of incidence from any medium. | Total internal reflection occurs only when the ray of light travels from a denser to rarer medium at an angle of incidence greater than the critical angle. |
| 3. | The energy of the reflected ray of light is less than that of the incident ray due to loss of energy. | It occurs without any loss of energy. The energy of incident and reflected rays of light remains the same. |
| 4. | The brightness of the image formed is less, which gradually reduces as the silvering of the mirror wears out. | A brighter image is formed. |
Notes
Students should refer to the answer according to the question.
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