Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Electromagnetic Waves Reflection and Refraction
Read the following carefully and choose the correct option
Statement 1: Light travels fastest in a vacuum.
Statement 2: Refraction occurs due to a change in the speed of light when it passes from one medium to another.
Statement 3: The refractive index of water is 1.33, meaning light travels slower in water than in vacuum.
Statement 4: A medium's optical density can be determined by its refractive index.
1
All statements are true.
2
Statements 1, 2, and 3 are true; Statement 4 is false.
3
Statements 2, 3, and 4 are true; Statement 1 is false.
4
More than one of the above
5
None of the above