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Q. No.If the ratio of magnifications produced by a simple microscope in near point adjustment and far point adjustment is \(\dfrac{6}{5},\) then the focal length of the lens is:
(take \(D=25\text{cm} \))
1. \(5\text{cm}\)
2. \(10\text{cm}\)
3. \(55\text{cm}\)
4. \(0.2\text{cm}\)
(take \(D=25\text{cm} \))
1. \(5\text{cm}\)
2. \(10\text{cm}\)
3. \(55\text{cm}\)
4. \(0.2\text{cm}\)
Subtopic: Simple & Compound Microscope |
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Level 1: 80%+
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A compound microscope consists of two lenses: an objective lens and an eyepiece lens. The objective lens has a magnifying power of \(8,\) and the total magnifying power of the compound microscope is \(96.\) What is the magnifying power of the eyepiece lens?
| 1. | \(5\) | 2. | \(10\) |
| 3. | \(11\) | 4. | \(12\) |
Subtopic: Simple & Compound Microscope |
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Level 1: 80%+
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A compound microscope has an objective lens of focal length \(1~\text{cm},\) a tube length of \(20~\text{cm},\) and forms a magnified virtual image \(25~\text{cm}\) from the eyepiece; if its total magnification is \(100,\) the focal length of the eyepiece is:
1. \(3\) cm
2. \(6.25\) cm
3. \(10\) cm
4. \(15\) cm
Subtopic: Simple & Compound Microscope |
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Level 2: 60%+
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Q. No.
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