A compound microscope has an objective of focal length 1 cm and an eyepiece of focal length 2.5 cm. An object has to be placed at a distance of 1.2 cm away from the objective for normal adjustment. a.Find the angular magnification. b.Find the length of the microscope tube.

Explanation

To solve the problem step by step, we will first determine the angular magnification of the compound microscope and then find the length of the microscope tube.

### Given Data:
- Focal length of the objective lens, \( f_o = 1 \, \text{cm} \)
- Focal length of the eyepiece lens, \( f_e = 2.5 \, \text{cm} \)
- Object distance from the objective lens, \( u_o = -1.2 \, \text{cm} \) (negative sign indicates that the object is on the same side as the incoming light)

### Step 1: Find the Image Distance from the Objective Lens
...