Fill In The Blanks 1. At critical angle of incidence, the angle of re

1.	Fill In The Blanks 1. At critical angle of incidence, the angle of refraction is ………… . 2. n1 sin i = n2 sin r, is called ……………… . 3. Speed of light in vacuum is ……………… . 4. Total internal reflection takes place when a light ray propagates from …………. to …………… medium. 5. The refractive index of a transparent material is 3/2. The speed of the light in that medium is …………… . 6. Mirage is an example of ……………… .
Answer» 1. 90° 2. Snell’s law 3. 3 × 10⁸ m/s 4. denser, rarer 5. 2 × 10⁸ m/s 6. optical illusion / total internal reflection.

Fill In The Blanks 1. At critical angle of incidence, the angle of refraction is ………… . 2. n1 sin i = n2 sin r, is called ……………… . 3. Speed of light in vacuum is ……………… . 4. Total internal reflection takes place when a light ray propagates from …………. to …………… medium. 5. The refractive index of a transparent material is 3/2. The speed of the light in that medium is …………… . 6. Mirage is an example of ……………… .

Answer»

1. 90°

2. Snell’s law

3. 3 × 10⁸ m/s

4. denser, rarer

5. 2 × 10⁸ m/s

6. optical illusion / total internal reflection.