(D) The magnification of the microscope is given as $M = 100$.The average width of the hair observed in the field of view is $W_{obs} = 3.5 \; mm$.The

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(D) The magnification of the microscope is given as $M = 100$.The average width of the hair observed in the field of view is $W_{obs} = 3.5 \; mm$.The actual thickness $T$ of the hair is calculated by dividing the observed width by the magnification:$T = \frac{W_{obs}}{M}$Substituting the values:$T = \frac{3.5 \; mm}{100} = 0.035 \; mm$.Therefore,the estimated thickness of the hair is $0.035 \; mm$.

Class 12 Physics Ray Optics and Optical Instruments Microscope

Easy

$A$ student measures the thickness of a human hair by looking at it through a microscope of magnification $100$. He makes $20$ observations and finds that the average width of the hair in the field of view of the microscope is $3.5 \; mm$. What is the estimate on the thickness (in $mm$) of hair?

A
$0.35$
B
$3.5$
C
$0.0035$
D
$0.035$

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Class 12

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Ray Optics and Optical Instruments

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Microscope

In a compound microscope,the magnification will be large if the focal length of the eyepiece is:

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What is a simple microscope? Obtain the equation of magnification for the image formed at the near point (normal vision distance).

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$A$ man uses a thin convex lens of focal length $5 \, cm$ as a magnifying glass. He reads a book by holding it close to his near point of $25 \, cm$. What are the closest and farthest distances at which he can keep the book from the lens to read clearly?

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Magnification of a compound microscope is $30$. The focal length of the eyepiece is $5 \, cm$ and the image is formed at the near point (distance of distinct vision) of $25 \, cm$. The magnification of the objective lens is:

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$A$ microscope is an optical instrument which:

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$A$ student measures the thickness of a human hair by looking at it through a microscope of magnification $100$. He makes $20$ observations and finds that the average width of the hair in the field of view of the microscope is $3.5 \; mm$. What is the estimate on the thickness (in $mm$) of hair?

Similar Questions

In a compound microscope,the magnification will be large if the focal length of the eyepiece is:

What is a simple microscope? Obtain the equation of magnification for the image formed at the near point (normal vision distance).

$A$ man uses a thin convex lens of focal length $5 \, cm$ as a magnifying glass. He reads a book by holding it close to his near point of $25 \, cm$. What are the closest and farthest distances at which he can keep the book from the lens to read clearly?

Magnification of a compound microscope is $30$. The focal length of the eyepiece is $5 \, cm$ and the image is formed at the near point (distance of distinct vision) of $25 \, cm$. The magnification of the objective lens is:

$A$ microscope is an optical instrument which:

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