Home
Class 11
PHYSICS
The accuracy of measurement also lies in...

The accuracy of measurement also lies in the way the results is expressed. The number of digits to which a value is to be expressed is one digit more than number of digits after after an operation is carried out on the given values. The error can be minimised by many trials and using the correct methods are instruments.
If the length and breadth are measured as `4.234 and 1.05 m`, the area of the rectangle is

A

`4.4457 m^(2)`

B

`4.45 m^(2)`

C

`4.446 m^(2)`

D

`0.4446 m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`A = lb = 4.4457 m^(2) = 4.45 m^(2)`
One should retain only three significiant figures.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • DIMENSIONS & MEASUREMENT

    CENGAGE PHYSICS|Exercise Archives - Subjective|4 Videos

  • DIMENSIONS & MEASUREMENT

    CENGAGE PHYSICS|Exercise Fill In The Blanks|4 Videos

  • DIMENSIONS & MEASUREMENT

    CENGAGE PHYSICS|Exercise Multiple Correct|2 Videos

  • CENTRE OF MASS

    CENGAGE PHYSICS|Exercise INTEGER_TYPE|1 Videos

  • FLUID MECHANICS

    CENGAGE PHYSICS|Exercise INTEGER_TYPE|1 Videos

Similar Questions

Explore conceptually related problems

The number of even numbers of three digits which can be formed with digits 0,1,2,3,4 and 5 (no digit being used more than once) is

Let N be the number of 4- digit numbers which contain not more than 2 different digits. The sum of the digits of N is :

Knowledge Check

  • The accuracy of measurement also lies in the way the results is expressed. The number of digits to which a value is to be expressed is one digit more than number of digits after after an operation is carried out on the given values. The error can be minimised by many trials and using the correct methods are instruments. The order of magnitude of 147 is

    A
    `1`
    B
    `2`
    C
    `3`
    D
    `4`

  • The accuracy of measurement also lies in the way the results is expressed. The number of digits to which a value is to be expressed is one digit more than number of digits after after an operation is carried out on the given values. The error can be minimised by many trials and using the correct methods are instruments. The number of significant figures can reduce in

    A
    Addition
    B
    Subtraction
    C
    Multiplication
    D
    Division

  • Number of four digit numbers in which at least one digit occurs more than once, is :

    A
    4464
    B
    4644
    C
    4446
    D
    6444

    • Similar Questions

    Explore conceptually related problems

    A two digit number is 4 times the sum of its digits and the unit digit is 3 more than the tens digit. The number is :

    A two digit number is 4 times the sum of its digits and the unit digit is 3 more than the tens digit . the number is :

    The number of 5 digit numbers that can be made using the digits 1 and 2 and in which at least one digit is different, is

    Let, the unit digit in a two-digit number is m and tens' digit is 5 more than unit digit, then find the number.

    The number of 3 digit even numbers that can be formed by using the digits 1 2 3 4 and 5 is given by

    Home
    Profile