Answer:
(a). The critical angle for the liquid when surrounded by air is 44.37°
(b). The angle of refraction is 26.17°.
Explanation:
Given that,
Incidence angle = 26.7°
Refraction angle = 18.3°
(a). We need to calculate the refraction of liquid
Using Snell's law
Put the value into the formula
We need to critical angle for the liquid when surrounded by air
Using formula of critical angle
Put the value into the formula
(b). Given that,
Incidence angle = 37.5°
Speed of light in mineral
We need to calculate the index of refraction
Using formula of index of refraction
Put the value into the formula
We need to calculate the angle of refraction
Using Snell's law
Put the value into the formula
Hence, (a). The critical angle for the liquid when surrounded by air is 44.37°
(b). The angle of refraction is 26.17°.