a man is looking at a small object placed at a near point. Without altering the position of his eye or the object, he puts a simple microscope of magnifying power 5x before his eyes. The angular magnification achieved is
a.) 5
b.) 2.5
c.) 1
d.) 0.2

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Solution

angular magnification is reciprocal of linear magnification in simple microscope...so 1/5 = 0.2

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Q. A man is looking at a small object placed at his near point. without altering the position of his eye or the object, he puts a simple microscope of magnifying power 5X before his eyes. The angular magnification achieved is

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Answer the following questions:

(a) The angle subtended at the eye by an object is equal to the angle subtended at the eye by the virtual image produced by a magnifying glass. In what sense then does a magnifying glass provide angular magnification?

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(c) Magnifying power of a simple microscope is inversely proportional to the focal length of the lens. What then stops us from using a convex lens of smaller and smaller focal length and achieving greater and greater magnifying power?

(d) Why must both the objective and the eyepiece of a compound microscope have short focal lengths?

(e) When viewing through a compound microscope, our eyes should be positioned not on the eyepiece but a short distance away from it for best viewing. Why? How much should be that short distance between the eye and eyepiece?

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a man is looking at a small object placed at a near point. Without altering the position of his eye or the object, he puts a simple microscope of magnifying power 5x before his eyes. The angular magnification achieved is a.) 5 b.) 2.5 c.) 1 d.) 0.2

angular magnification is reciprocal of linear magnification in simple microscope...so 1/5 = 0.2

a man is looking at a small object placed at a near point. Without altering the position of his eye or the object, he puts a simple microscope of magnifying power 5x before his eyes. The angular magnification achieved is
a.) 5
b.) 2.5
c.) 1
d.) 0.2