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Name the bending of light, if the beam of light passes obliquely from one medium to another.

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Name the bending of light, if the beam of light passes obliquely from one medium to another.

(a) Refraction

(b) Dispersion

(c) Reflection

(d) Deviation

I got this question during an interview.

My doubt stems from Lenses topic in chapter Optics of Engineering Physics II

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The correct choice is (a) Refraction

Easiest explanation: If the beam of light passes obliquely from one medium to another, then the bending of light is known as refraction. Whereas, reflection means change in direction of light, at an interface, between two different mediums, such that the light returns into the medium from where it had originated. Dispersion is the property by which spreading of light takes place according to its color, as it passes through an object. Deviation is the bending of a beam of light, away from a straight line by an angle called angle of deviation.

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