Nationally Registered Certified Medical Assistant (NRCMA) (NAHP) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Study for the Nationally Registered Certified Medical Assistant Exam. Prepare with interactive quizzes and multiple-choice questions that come with helpful hints and explanations. Get ready to earn your certification with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

When using a microscope with a 10x ocular and the 40x objective in place, the total magnification is?

100x
400x
1000x
40x

The correct answer is: 400x

When using a microscope with a 10x ocular and a 40x objective, the total magnification is calculated by multiplying the magnification of the ocular with the magnification of the objective. In this case, 10x ocular x 40x objective = 400x total magnification. Option A, 100x, is incorrect because it only accounts for the magnification of the objective and does not include the ocular. Option C, 1000x, is incorrect because it multiplies the magnifications of both the ocular and the objective, resulting in an inaccurate total magnification. Option D, 40x, is incorrect because it only accounts for the magnification of the objective and does not include the ocular.