The value of Nominal GDP is $ 1100 and the value of Real GDP is $ 1000. Find the value of GDP deflator.

The correct option is 1.1.

To find the value of the GDP deflator, we use the standard economic formula that relates Nominal GDP, Real GDP, and the GDP deflator:

$$\text{GDP Deflator}=\frac{\text{Nominal GDP}}{\text{Real GDP}}$$

Note: Sometimes the GDP deflator is expressed as an index (multiplied by 100). However, based on the provided options, it is expressed here as a simple ratio.

From the question, we are given the following values:
- Nominal GDP = $ 1100
- Real GDP = $ 1000

Substituting these values into the formula, we get:

$$\text{GDP Deflator}=\frac{1100}{1000}$$

Simplifying the division:

$$\text{GDP Deflator}=1.1$$

Thus, the value of the GDP deflator is 1.1, which matches the correct option.