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A stopwatch has 10 divisions graduated between the 0 and 5 s marks. What is its least count?
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.
Name the convenient unit you will use to measure:
length of a hall
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.
Amongst the unit of volume which is most suitable for measuring:
Volume of a swimming tank
Amongst the unit of volume which is most suitable for measuring:
Volume of a glass filled with milk
Amongst the unit of volume which is most suitable for measuring:
Volume of an exercise book
Is there any difference in the following measurements?
(a) 51.7 cm
(b) 51.70 cm
(c) 51.700 cm.
Explain your answer.
Which measurement is most accurate?
