LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A microscope has a x10 eyepiece and a x40 objective lens. What is the total magnification?
A
x10
B
x4
C
x40
D
x400
Explanation: 

Detailed explanation-1: -When viewing items under a microscope, to determine the total magnification you would multiply the magnification of the objective lens by the eyepiece objective. Thus a microscope with a 40x objective lens and a 10x eyepiece would have a total magnification of 400x.

Detailed explanation-2: -To get the total magnification level you must multiply the magnification of the ocular lens by the magnification of the objective lens. So, if you are viewing your slide under the 40x objective lens you would multiply that by the 10x of the ocular lens for a total magnification of 400x.

Detailed explanation-3: -The eyepiece lens compounded with the objective lens provides the power of magnification, so a 10x eyepiece and a 40x objective will magnify 400 times. A microscope may have 2, 3, or 4 objectives lenses mounted in a turret that turns. This allows for selection of different powers of magnification.

Detailed explanation-4: -Answer. Answer: For example, if the eyepiece magnification is 10x and the objective lens in use has a magnification of 4x, the total magnification is 10 × 4 = 40.

Detailed explanation-5: -If the total magnification of a slide is 400x and the ocular lenses are 10x, we can find the magnifying power of the objective being used by dividing the total magnification of the slide by the magnification of the ocular lens: 400x÷10x=40x 400 x ÷ 10 x = 40 x .

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