To identify the correct medium for a liquid based on the speeds given in the tables, we need to know the typical speed of sound in a liquid. The speed of sound in water (a common liquid) is approximately 1,481 m/s, but it can vary depending on the temperature and other factors.
Now, let's look at the tables:
- Table 1: 3.00 x 10^8 m/s (speed of light) and speed of sound (not specified).
- Table 2: 12,000 m/s (speed of sound) and 1.24 x 10^8 m/s (speed of light). The speed of sound here is too high for any common liquid.
- Table 3: 343 m/s (speed of sound) and 3.00 x 10^8 m/s (speed of light). This speed is typical for sound in air.
- Table 4: 1,481 m/s (speed of sound) and 2.25 x 10^8 m/s (speed of light). The speed of sound here is typical for many liquids.
Based on this analysis, Table 4 shows the correct medium for a liquid.
So, the answer is:
Table 4