Fill in the blanks to complete the following sentence:
Q: The refractive index of glass with respect to air is 3/2. thee refractive index of air with respect to glass will be _____

Answer

To solve the problem, we need to understand the relationship between the refractive indices of two media. The refractive index of one medium with respect to another is the reciprocal of the refractive index of the second medium with respect to the first.

Here are the steps to find the refractive index of air with respect to glass:

### Step 1: Understand the given information
We are given that the refractive index of glass with respect to air is \( n_{ga} = \frac{3}{2} \).

### Step 2: Use the formula for refractive indices
The refractive index of air with respect to glass can be found using the formula:
\[ n_{ag} = \frac{1}{n_{ga}} \]
where:
- \( n_{ag} \) is the refractive index of air with respect to glass,
- \( n_{ga} \) is the refractive index of glass with respect to air.

### Step 3: Substitute the known value
Now, substitute the value of \( n_{ga} \) into the equation:
\[ n_{ag} = \frac{1}{\frac{3}{2}} \]

### Step 4: Calculate the reciprocal
To calculate the reciprocal, we can rewrite it as:
\[ n_{ag} = \frac{2}{3} \]

### Step 5: Conclusion
Thus, the refractive index of air with respect to glass is:
\[ n_{ag} = \frac{2}{3} \]

### Final Answer
The refractive index of air with respect to glass will be \( \frac{2}{3} \).

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