When using the light microscope, a 40X objective and an 10X ocular lens produce a total magnification of:

Question

BlackTom AI · Accepted Answer

To evaluate the total magnification when using a microscope, multiply the magnification of the objective lens by the magnification of the ocular (eye) lens.

Option 1: 30. This would correspond to a product of 3 with a 10x ocular or a similar mismatch, which does not align with the given objective of 40x. Therefore this is not correct.

Option 2: 50. This would imply a product like 5x times 10x or a 10x ocular with a 5x objective, which is inconsistent with the stated 40x objective. Hence, this is incorrect.

Option 3: 100. This would result from a 10x objective paired with a 10x ocular (or another pairing yielding a tenfold product), not from a 40x objective. Therefore this choice is not accurate for the given lenses.

Option 4: 400. Here, 40x (objective) multiplied by 10x (ocular) gives 400x total magnification, which matches the standard calculation for these lens values. This is the correct product for the specified setup.

Option 5: 1000. Achieving 1000x would require a 100x objective with a 10x ocular (or a similar high-magnification combination), which is not what is stated in this scenario. Thus, this option is incorrect.

In summary, the rule is straightforward: total magnification = objective magnification × ocular magnification, and substituting 40x for the objective and 10x for the ocular yields 400x. The other numbers arise from mismatched or unrealistic combinations with the given lenses.

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When using the light microscope, a 40X objective and an 10X ocular lens produce a total magnification of:

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