Question

What are the factors upon which the following depends :

angle of deviation

shift in refraction

critical ∠

Plz answer it to the point

Answer 1

Angle of deviation

The factors upon which angle of deviation depends are as follows :-

(i) Angle of incidence

⇒ The angle of deviation first decreases with increase in angle of incidence and then after reaching a minimum value , it again starts increasing .

(ii) Refractive index of the prism

⇒ The angle of deviation is directly proportional to the refractive index .

(iii) Angle of the prism

⇒ The angle of deviation is directly proportional to the angle of  the prism .

(iv) Wavelength of the light ray

⇒ The angle of deviation is inversely proportional to the wavelength of the light ray .

Shift in refraction

(i) Refractive index

⇒ Shift is directly proportional to the refractive index of the medium .

(ii) Thickness of the medium

⇒ Shift is directly proportional to the thickness of the medium .

(iii) Wavelength of light

⇒ Shift is inversely proportional to the wavelength of the light .

Critical angle

(i) Wavelength of light

⇒ Critical angle is directly proportional to the wavelength of light .

(ii) Temperature

⇒ Critical angle is directly proportional to the temperature .

Hope it helps :-)

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