Physics
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.
Refraction Plane Surfaces
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Answer
there is no fixed relation
Reason — There is no fixed relation between the incident angle i and refracted angle r because:
- when a ray of light travels from a rarer medium to a denser medium, it bends towards the normal hence ∠r < ∠i
- when a ray of light travels from a denser medium to a rarer medium, it bends away from the normal hence ∠r > ∠i
- when a ray of light is incident normally on the surface separating the two media, it passes undeviated hence ∠r = ∠i.
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Related Questions
The speed of light is maximum in :
- air
- water
- glass
- diamond
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.
The intensity of the refracted light is always …………… the intensity of incident light:
- greater than
- equal to
- less than
- none of the above
The ray AO is shown in the figure given below. The path of refracted ray and emergent ray will be:
(1) the refracted ray will bend towards normal
(2) the refracted ray will bend away from normal
(3) the emergent ray will bend towards normal
(4) emergent ray will bend away from normal- (1) and (3)
- (1) and (4)
- (2) and (3)
- (2) and (4)