
The density of a material in the shape of a cube is determined by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are respectively and the maximum error in determining the density is:
A)
B)
C)
D)
Answer
139.5k+ views
1 likes
Hint: To solve this question we need to use the formulae for relative error of density of a substance. For this we should know the formulae of density of a substance. Also in a cube, all the sides are equal. In the question, the error in length is given which can be used in place of error inside.
Formula Used:
Density of a cube =
Where is the density of the cube, is the mass of the substance and is the side length of the substance.
Also Relative error is
Where is the difference in measured value and actual expected value and is the actual expected value.
Complete step by step answer:
In the question the error in mass is given as and the error in length is given as .
We know the formulae for density is
Where is the density of the cube, is the mass of the substance and is the side length of the substance.
We know that relative error is given by .
Where is the difference in measured value and actual expected value and is the actual expected value.
The relative error in density will be the sum of the relative errors in the mass and length. So relative error in density is
Hence, the correct option is (C).
Additional Information:
Relative error when used as a measure of precision is the ratio of the absolute error of a measurement to the measurement being taken. In other words, this type of error is relative to the size of the item being measured.
Note: With the help of relative error method, we can determine the magnitude of the absolute error in terms of the actual size of the measurement. This can be used in error measurement even if the actual dimensions are not known. Lesser the value of relative error, more accurate the value is. Relative error is a dimensionless quantity.
Formula Used:
Density of a cube
Where
Also Relative error is
Where
Complete step by step answer:
In the question the error in mass is given as
We know the formulae for density is
Where
We know that relative error is given by
Where
The relative error in density will be the sum of the relative errors in the mass and length. So relative error in density is
Hence, the correct option is (C).
Additional Information:
Relative error when used as a measure of precision is the ratio of the absolute error of a measurement to the measurement being taken. In other words, this type of error is relative to the size of the item being measured.
Note: With the help of relative error method, we can determine the magnitude of the absolute error in terms of the actual size of the measurement. This can be used in error measurement even if the actual dimensions are not known. Lesser the value of relative error, more accurate the value is. Relative error is a dimensionless quantity.
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
EMI starts from ₹3,487.34 per month
Recently Updated Pages
JEE Main 2025 April 2 Shift 1 Maths Paper with Answers & Analysis

JEE Main 2025 April 2 Shift 1 Chemistry Paper with Answers - Detailed Analysis

JEE Mains 2025 April 2 Shift 1 Question Paper with Answer Key - Physics

JEE Main 2025 April 2 Shift 1 Paper Analysis, Answer Key and Student Reactions

Top Benefits of Vedantu's Online JEE Coaching for Success

Vedantu JEE Offline Coaching Fees & Discounts – Complete Details

Trending doubts
JEE Main 2025 Session 2: Application Form (Out), Exam Dates (Released), Eligibility, & More

JEE Main 2025: Derivation of Equation of Trajectory in Physics

JEE Main Exam Marking Scheme: Detailed Breakdown of Marks and Negative Marking

Learn About Angle Of Deviation In Prism: JEE Main Physics 2025

Electric Field Due to Uniformly Charged Ring for JEE Main 2025 - Formula and Derivation

JEE Main 2025: Conversion of Galvanometer Into Ammeter And Voltmeter in Physics

Other Pages
Units and Measurements Class 11 Notes: CBSE Physics Chapter 1

JEE Advanced Marks vs Ranks 2025: Understanding Category-wise Qualifying Marks and Previous Year Cut-offs

NCERT Solutions for Class 11 Physics Chapter 1 Units and Measurements

Motion in a Straight Line Class 11 Notes: CBSE Physics Chapter 2

Important Questions for CBSE Class 11 Physics Chapter 1 - Units and Measurement

NCERT Solutions for Class 11 Physics Chapter 2 Motion In A Straight Line
