Which of the following statements about the PCM apparatus is accurate according to the material?

• A. The eyepiece is called the objective.
• B. The eyepiece magnification is 8x.
• C. The OSHA reference method is not mentioned.
• D. The magnification of the eyepiece is 10x.

Answer: (D)

The key idea here is knowing the eyepiece specification of the PCM apparatus. The eyepiece is the lens you look through, and it is separate from the objective lens that sits near the sample. The material states that the eyepiece magnification is 10x, so that claim matches what you should observe when using the device. Claiming that the eyepiece is the same as the objective confuses two different components, so that one isn’t correct. Claiming the eyepiece magnification is 8x contradicts the given specification, so it’s not accurate. The statement about the OSHA reference method not being mentioned isn’t the detail the material uses to describe the device, whereas the confirmed specification is the 10x eyepiece.