Physics · Optics, Nature of Light and Optical Instruments
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Critical angle of a medium depends upon the:
- A
Speed of light
- B
wavelength of light
- C
Refractive index of the medium
- D
intensity of light
The critical angle is the angle of incidence, which corresponds to an angle of refraction of 90 degrees when light travels from a denser to a rarer medium.
The critical angle of a medium is independent of the speed of light.
Critical angle of a medium does not directly depend on wavelength of light. However , for different colours/wavelengths of light, critical angle will be different because refractive index depends on the wavelength of light. A change in wavelength causes a change in refractive index for the media hence the critical angle changes. “C” will still be the most appropriate answer.
The critical angle is the angle of incidence, which corresponds to an angle of refraction of 90 degrees when light travels from a denser to a rarer medium.
The intensity of light does not affect the critical angle.
Tagged under Physics · Optics, Nature of Light and Optical Instruments · 2006