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 of hair?

Open in App

Solution

Magnification of the microscope = 100

Average width of the hair in the field of view of the microscope = 3.5 mm

∴Actual thickness of the hair is = 0.035 mm.

Suggest Corrections

Similar questions

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 is 3.5 mm. What is the estimate on the thickness of the hair:

(a) 0.0035 mm (b) 0.035 mm

Q. A student measures the thickness of a human hair using a microscope of magnification 100. He makes 20 observations and finds that the average thickness (as viewed in the microscope is 3.5 mm). What is the estimate of the thickness of hair?

Q. Can we measure thickness of hair using screw gauge ?

Q. There are

100

students in a class.

24

of the students in the class have brown hair. If a student is called up at random, what is the probability that the student possess brown hair?

Q. Students in a biology laboratory were asked to view certain cells microscopically and measure the size of a single cell. They were given a compound microscope with an eyepiece of

15

X magnification and an objective lens of

10

X magnification. The eyepiece has a scale with a least count of

10

μ

m. When the students focused the cells under the given microscope, they found that one cell measured

60

divisions on the eyepiece scale. What is the approximate size of that cell?

Join BYJU'S Learning Program

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 of hair?

Magnification of the microscope = 100 Average width of the hair in the field of view of the microscope = 3.5 mm ∴Actual thickness of the hair is = 0.035 mm.

Magnification of the microscope = 100

Average width of the hair in the field of view of the microscope = 3.5 mm

∴Actual thickness of the hair is = 0.035 mm.