Ray optics Refraction
Que: What is Refraction? Or define refraction.
Ans: Refraction is a phenomenon in which when a light ray/wave travels from
one medium to another, velocity of light changes, wavelength changes but frequency
remains constant.
Refractive
Index:
Que: What is Glass Prism?
Ans: Glass Prism is a phenomenon in which a light ray
upon passing from the glass prism deviates from the straight line. This deviation
is known as angle of deviation. Deviation
is different for different colors. For red it is least and for violet it is maximum. This deviation is the main cause of dispersion.
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