Advertisements
Advertisements
प्रश्न
State the number of significant figures in the following:
0.2370 g cm–3
Advertisements
उत्तर
0.2370 g cm–3 has four significant figures.
Explanation:
For a number with decimals, the trailing zeroes are significant. Hence, besides the digits 2, 3, and 7, the 0 that appears after the decimal point is also a significant figure.
APPEARS IN
संबंधित प्रश्न
How many significant figures are present in the 5005?
How many significant figures are present in the 126,000?
Round up the following upto three significant figures:
34.216
Round up the following upto three significant figures:
10.4107
The relative density of lead is 11.3. Its density is ______ g cm–3or ______ kg m–3.
The mean diameter of a thin brass rod is to be measured by vernier callipers. Why is a set of 100 measurements of the diameter expected to yield a more reliable estimate than a set of 5 measurements only?
Precise measurements of physical quantities are a need of science. For example, to ascertain the speed of an aircraft, one must have an accurate method to find its positions at closely separated instants of time. This was the actual motivation behind the discovery of radar in World War II. Think of different examples in modern science where precise measurements of length, time, mass etc. are needed. Also, wherever you can, give a quantitative idea of the precision needed.
A SONAR (sound navigation and ranging) uses ultrasonic waves to detect and locate objects under water. In a submarine equipped with a SONAR the time delay between generation of a probe wave and the reception of its echo after reflection from an enemy submarine is found to be 77.0 s. What is the distance of the enemy submarine? (Speed of sound in water = 1450 m s–1).
State the number of significant figures in the following:
2.64 × 1024 kg
State the number of significant figures in the following:
6.320 J
State the number of significant figures in the following:
6.032 N m–2
State the number of significant figures in the following:
0.0006032 m2
Answer the following question.
Describe what is meant by order of magnitude.
The radius of the circle is 3.12 m. Calculate the area of the circle with regard to significant figures.
Taking into account of the significant figures, what is the value of 9.99 m – 0.0099 m?
If the density of a solution is 3.12 g mL–1, the mass of 1.5 mL solution in significant figures is ______.
Significant figures in a measurement include which of the following?
Which of the following measurements contains exactly two significant figures?
Which of the following statements is correct about significant figures and accuracy?
