Physics
What is the meant by the statement ‘the critical angle for diamond is 24°'?
Answer
The statement 'the critical angle for diamond is 24°' implies that at an incident angle of 24°, the angle of refraction in the air will be 90° within the diamond.
If the incident angle is more than the critical angle then the ray will suffer total internal reflection without any refraction.
Related Questions
Fill in the blanks to complete the following sentences —
(a) Total internal reflection occurs only when a ray of light passes from a ………. medium to a ………. medium.
(b) Critical angle is the angle of ………. in denser medium for which the angle of ………. in rarer medium is ……….
State whether the following statement is true or false —
If the angle of incidence is greater than the critical angle, light is not refracted at all, when it falls on the surface from a denser medium to a rarer medium.
Name two factors which affect the critical angle for a given pair of media. State how do the factors affect it.