The objective lenses on the microscopes are . This means the focal plane of each lens is distance from the nose piece. Therefore, if you focus on the specimen using the lowest power objective, coincidentally the easiest objective to focus with, will be needed to focus using higher power objectives. When focusing the higher power objectives, only the should be necessary.

answer:

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Explanation:

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy