Tools and Techniques — Practice Quiz
CBSE · Class 11 · Biotechnology
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What is the main purpose of microscopy in biology?
What did Robert Hooke observe while using his simple microscope in 1665?
What term did Robert Hooke coin for the cork structure he observed?
Which scientists proposed cell theory in 1838?
Sample Questions
What does magnification mean in microscopy?
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Increase in retinal image size
Magnification is the ability by which the retinal image size can be increased via a microscope.
What is the formula for magnification of a lens?
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M = f / (f - d)
The magnification of a lens is given by M = f / (f - d), where f is focal length and d is distance of the object from the lens.
How is total magnification of a compound microscope calculated?
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Objective magnification multiplied by eyepiece magnification
Total magnification equals the magnifying power of the objective lens multiplied by that of the eyepiece.
Which eyepiece magnifications are used in a student microscope?
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10x or 15x
A student microscope commonly has eyepieces of 10x or 15x magnification.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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