Total Internal Reflection Multiple Choice Questions (MCQ) PDF Download

MCQ 1: When a ray of light enters from denser medium to rare medium it bends

1. towards normal
2. away from normal
3. perpendicular to normal
4. parallel to normal

MCQ 2: The critical angle of water when refracted angle is 90° and refractive index for water and air is 1.33 and 1 is

1. 48.8 °
2. 49.1 °
3. 50 °
4. 51 °

MCQ 3: The outer concentric shell in fiber optic is called

1. cladding
2. core
3. coat
4. mantle

MCQ 4: The entire light is reflected into the denser medium, which is called total

1. internal reflection of light
2. external reflection of light
3. internal refraction of light
4. external refraction of light

MCQ 5: The critical angle for glass is

1. 50 °
2. 42 °
3. 45 °
4. 30 °