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प्रश्न
Name the convenient unit you will use to measure:
diameter of hair
उत्तर
Micrometre (µm)
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संबंधित प्रश्न
A microscope is provided with a main scale graduated with 20 divisions in 1 cm and a vernier scale with 50 division on it of length same as of 49 divisions of main scale. Find the least count of the microscope.
The main scale of a vernier callipers is calibrated in mm and 19 divisions of main scale are equal in length to 20 divisions of the vernier scale. In measuring the diameter of a cylinder by this instrument, the main scale reads 35 divisions and 4th division of vernier scale coincides with a main scale division. Find
(i) Least count and (ii) Radius of a cylinder.
Define the term amplitude.
Name two factors on which the time period of a simple pendulum depends. Write the relation for the time period in terms of the above named factors.
A seconds pendulum is taken to a place where acceleration due to the gravity falls to one-fourth. How is the time period of the pendulum affected, if at all? Give reasons. What will be its new time period?
Name the convenient unit you will use to measure:
width of a book
Name the most convenient unit of mass you will use to measure:
Mass of small amount of medicine.
What do you understand by the term degree of accuracy?
Which of the following measurement is most accurate?
