Physicsmedium · Past Paper
In which medium does light travel the fastest?
AWater (n=1.33)
BGlass (n=1.5)
CKerosene (n=1.44)
DAir (n=1.0003)
✓ Correct Answer: D — Air (n=1.0003)
The speed of light is inversely proportional to the refractive index; thus, it is fastest in the medium with the lowest index.
Share this question
More from Physics
- If the distance between two objects is doubled, the gravitational force becomes:
- If the objective and eyepiece of a microscope are interchanged, it will act as:
- A car travels from A to B at 20 km/h and from B to A at 30 km/h. The average speed for the whole journey is:
- Why is the core of a transformer laminated?
- The product of mass and acceleration is: