English
Karnataka Board PUCPUC Science Class 11

State the number of significant figures in the following: 0.0006032 m2

Advertisements
Advertisements

Question

State the number of significant figures in the following:

0.0006032 m2

One Line Answer
Advertisements

Solution

0.0006032 m2 has four significant figures.

Explanation:

In numbers less than one, any zeros between the decimal point and the first non-zero digit are not considered significant; they merely set the decimal place. Therefore, the initial three zeros are not significant. However, the digits 6, 0, 3, and 2 are all significant, including the zero, because it lies between two non-zero digits, indicating precision in the measurement.

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Units and Measurements - Exercise [Page 11]

APPEARS IN

NCERT Physics Part 1 and 2 [English] Class 11
Chapter 1 Units and Measurements
Exercise | Q 1.10 (f) | Page 11

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

How many significant figures are present in the 2.0034?


How many significant figures should be present in the answer of the following calculation?

5 × 5.364


How many significant figures should be present in the answer of the following calculation?

0.0125 + 0.7864 + 0.0215


You are given a thread and a metre scale. How will you estimate the diameter of the thread?


The mass of a box measured by a grocer’s balance is 2.300 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is

  1. What is the total mass of the box?
  2. What is the difference in the masses of the pieces to correct significant figures?

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.


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.


Just as precise measurements are necessary in science, it is equally important to be able to make rough estimates of quantities using rudimentary ideas and common observations. Think of ways by which you can estimate the following (where an estimate is difficult to obtain, try to get an upper bound on the quantity):-

the wind speed during a storm


Solve the numerical example.

Nuclear radius R has a dependence on the mass number (A) as R =1.3 × 10-16 A1/3 m. For a nucleus of mass number A = 125, obtain the order of magnitude of R expressed in the meter.


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.


Write a short note on the following.

Rounding - off


Assertion (A): Significant figures for 0.200 is 3 where as for 200 it is 1.

Reason (R): Zero at the end or right of a number are significant provided they are not on the right side of the decimal point.


If the density of a solution is 3.12 g mL–1, the mass of 1.5 mL solution in significant figures is ______.


Calculate the length of the arc of a circle of radius 31.0 cm which subtends an angle of `pi/6` at the centre.


Significant figures in a measurement include which of the following?


The radius of Earth is written as 0.64 × 10⁷ m in scientific notation. What is its order of magnitude?


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?


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?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×