Advertisements
Advertisements
प्रश्न
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?
उत्तर
Basically there is no difference between the quantity being measured but there is a difference of significant figures in the measurement.
(a). Number of significant figures = 3
(b). Number of significant figures = 4
(c). Number of significant figures = 5
Since (c) part has the maximum number of significant figures = 5, therefore it is most accurate among the given three.
APPEARS IN
संबंधित प्रश्न
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 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 body measures 25 m. State the unit and the magnitude of the unit in the statement.
Name the convenient unit you will use to measure:
length of a hall
Name the convenient unit you will use to measure:
diameter of hair
Name the most convenient unit of mass you will use to measure:
The grain output of a state
Name the most convenient unit of mass you will use to measure:
The bag of sugar
The size of bacteria is 2 μ.. Find the number of bacteria in 3 m length.
