Answer :

GinnyAnswer
To calculate the power of the glasses, you can use the formula: \[ Power = \frac{1}{focal\ length} \] Given that the focal length of the glasses is 0.30 m, you can substitute this value into the formula: \[ Power = \frac{1}{0.30} = 3.33 \, diopters \] Therefore, the power of Beth's glasses is 3.33 diopters. This means that her glasses can correct her farsightedness by providing the appropriate refractive power for her to see objects clearly up close.

Answer:

To calculate the power of Beth's glasses in diopters, we use the formula:

\[ P = \frac{1}{f} \]

where \( P \) is the power in diopters and \( f \) is the focal length in meters.

Given that the focal length \( f = 0.30 \) m, we can substitute this value into the formula:

\[ P = \frac{1}{0.30} = 3.33 \, \text{diopters} \]

So, the power of Beth's glasses is \( +3.33 \) diopters.