Question

Consider two flasks containing 5 and 25 cm3 of water, respectively. They are identically and homogeneously irradiated with y-rays, making the average kerma equal to 1 gy in the smaller flask. What is the average kerma in the larger flask?

1) 0.04 gy
2) 0.2 gy
3) 0.8 gy
4) 4 gy

Answer 1

The average kerma in the larger flask can be calculated using the formula Kerma = Initial energy / Mass. By plugging in the given values, the average kerma is found to be 0.2 Gy.

Step-by-step explanation:

The average kerma in the larger flask can be calculated by using the formula:

Kerma = Initial energy / Mass

Since the average kerma in the smaller flask is 1 Gy, which is equivalent to 1 J/kg, and the mass of the water in the smaller flask is 5 cm3, the initial energy can be calculated as:

Initial energy = Kerma * Mass

Therefore, the average kerma in the larger flask with 25 cm3 of water would be:

Kerma = Initial energy / Mass

Kerma = (1 Gy * 5 cm3) / 25 cm3

Kerma = 0.2 Gy

So, the average kerma in the larger flask is 0.2 Gy, which corresponds to option 2)