Physics
The incorrect statement among the following is:
- When a ray of light gets refracted from a denser to a rarer medium, the speed of light decreases.
- The frequency of light does not change on refraction.
- The speed of light V in a medium is related to its wavelength λ and frequency f as V = fλ
- The incident ray, the refracted ray and the normal at the point of incidence all lie in one plane.
Refraction Plane Surfaces
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Answer
When a ray of light gets refracted from a denser to a rarer medium, the speed of light decreases.
Reason — When a ray of light gets refracted from a denser to a rarer medium, the speed of light increases due to the change in the refractive index of the medium.
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Related Questions
A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incidence is:
- 0°
- 45°
- 60°
- 90°
The speed of light is maximum in :
- air
- water
- glass
- diamond
In refraction of light, the relation between incident angle i and refracted angle r is:
- i > r
- r > i
- i = r
- there is no fixed relation.
The intensity of the refracted light is always …………… the intensity of incident light:
- greater than
- equal to
- less than
- none of the above