Home › CBSE Class 12 (Science) › Physics › Ray Optics and Optical Instruments › The angle of incidence that gives a 90° angle of…
The angle of incidence that gives a 90° angle of refraction is the
ABrewster angle
BPrism angle
CGlancing angle
DCritical angle
Answer & Solution
Correct answer: D. Critical angle
At this limiting angle the refracted ray grazes the interface, and larger angles produce total reflection.
Related questions
A prismatic corner reflector turns incoming light back along its path using how many totalIn a wiper rain sensor, water drops do what to the infrared beam?Which device uses the critical angle to measure the refractive index of a substance?Which prism pair is commonly used to turn the view upright in binoculars?At the critical angle, the refracted ray travels in which direction?A swimmer looking up from below calm water sees the outside world compressed into a cone. Optical fibres carry signals over long distances by which principle?Diamond has a refractive index of about 2.42. Roughly what is its critical angle in air?