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Ray Optics and Optical Instruments
A light movs from denser to rarer medium, which of the following is correct?
Energy increases
Frequency increases
Phase changes by 90°
Velocity increases
C.
Phase changes by 90°
When a ray of light moves from one medium to other, its velocity changes. This change depends on refractive index of the medium.
Light travels from denser to rarer medium, ie, from medium of higher. refractive index to lower
refractive mdex. So, in second (rarer) medium, its velocity increases.
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