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How many significant figures are present in the 208?

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प्रश्न

How many significant figures are present in the 208?

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उत्तर

208 - There are 3 significant figures.

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अध्याय 1: Some Basic Concepts of Chemistry - EXERCISES [पृष्ठ २६]

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एनसीईआरटी Chemistry Part 1 and 2 [English] Class 11
अध्याय 1 Some Basic Concepts of Chemistry
EXERCISES | Q 1.19 - (ii) | पृष्ठ २६

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संबंधित प्रश्न

Round up the following upto three significant figures:

2808


A LASER is a source of very intense, monochromatic, and unidirectional beam of light. These properties of a laser light can be exploited to measure long distances. The distance of the Moon from the Earth has been already determined very precisely using a laser as a source of light. A laser light beamed at the Moon takes 2.56 s to return after reflection at the Moon’s surface. How much is the radius of the lunar orbit around the Earth?


It is a well known fact that during a total solar eclipse the disk of the moon almost completely covers the disk of the Sun. From this fact and from the information you can gather from examples 2.3 and 2.4, determine the approximate diameter of the moon.


State the number of significant figures in the following:

0.007 m2


Solve the numerical example.

Write down the number of significant figures in the following: 0.003 m2, 0.1250 gm cm-2, 6.4 x 106 m, 1.6 x 10-19 C, 9.1 x 10-31 kg.


Solve the numerical example.

The diameter of a sphere is 2.14 cm. Calculate the volume of the sphere to the correct number of significant figures.


Answer the following question.

Describe what is meant by order of magnitude.


Which of the following has the highest number of significant figures?


The radius of the circle is 3.12 m. Calculate the area of the circle with regard to significant figures.


The sum of the numbers 436.32, 227.2 and 0.301 in appropriate significant figures is ______.


The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give ______.


The length and breadth of a rectangular sheet are 16.2 cm and 10.1cm, respectively. The area of the sheet in appropriate significant figures and error is ______.


Using the rules for significant figures, the correct answer for the expression `(0.02858 xx 0.112)/(0.5702)` will be ______.


How many significant figures are present in the measurement 2007 grams?


What is the least count of a measuring instrument?


The arithmetic mean of three measurements, 15.4 cm, 15.4 cm, and 15.5 cm, is 15.43 cm. How many significant figures does this result have?


How many significant figures are there in the number 0.001405?


Which of the following statements is correct about significant figures and accuracy?


A length L is measured as 125 m, which is also written as 12500 cm and 125000 mm. How many significant figures does this measurement have?


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