What is the total magnification when using the high dry objective lens (40x) with a 10x ocular?

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Multiple Choice

What is the total magnification when using the high dry objective lens (40x) with a 10x ocular?

Explanation:
Total magnification comes from multiplying the objective magnification by the ocular (eyepiece) magnification. With a 40x high dry objective and a 10x eyepiece, multiply 40 by 10 to get 400x. So the observed magnification is 400x. The other numbers would require different combinations of objective and/or ocular magnifications.

Total magnification comes from multiplying the objective magnification by the ocular (eyepiece) magnification. With a 40x high dry objective and a 10x eyepiece, multiply 40 by 10 to get 400x. So the observed magnification is 400x. The other numbers would require different combinations of objective and/or ocular magnifications.

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