The expression in the image shows $\sqrt{\frac{1}{4}}$. To simplify this:

$\sqrt{\frac{1}{4}} = \frac{\sqrt{1}}{\sqrt{4}} = \frac{1}{2}.$

So, the simplified result is $\frac{1}{2}$.

Would you like any further explanation or additional questions on this topic?

Here are some related questions:

1. How do you simplify other square roots, such as $\sqrt{\frac{9}{16}}$?
2. What is the principle behind simplifying square roots of fractions?
3. How can square roots be used in real-life applications?
4. What is the difference between rational and irrational numbers?
5. How do square roots relate to powers and exponents?

Tip: When simplifying square roots, always look for perfect squares in the numerator and denominator to break them down easily!