A Galilean telescope obtains the erect final image by using a diverging lens of focal length 7.5 cm instead of an intermediate erecting lens. If the focal length of the objective is 150 cm, what is the separation between the objective and the eyepiece?

Explanation

To find the separation between the objective and the eyepiece of a Galilean telescope, we can follow these steps:

### Step 1: Identify the focal lengths
We are given:
- Focal length of the objective lens, \( f_o = 150 \, \text{cm} \)
- Focal length of the eyepiece (diverging lens), \( f_e = -7.5 \, \text{cm} \) (Note: The focal length of a diverging lens is taken as negative)

### Step 2: Use the formula for separation
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