Physics

The accuracy of measurement also lies in the way the result is expressed. The number of digits to which a value is to be expressed is one digit more than number of sure numbers. Rules do exist to deal with number of digits after an operation is carried out on the given values. The error can be minimised by many trials and using the correct methods and instruments.
The number of significant figures can reduces in


ANSWER

Subtraction


SOLUTION
In subtraction of two significant figures of same value the no. of significant figures may reduce.
View Answers

You're just one step away

Create your Digital Resume For FREE on your name's sub domain "yourname.wcard.io". Register Here!


Single Correct Medium Published on 18th 08, 2020
Next Question
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 201
Enroll Now For FREE

Realted Questions

Q1 Single Correct Medium
1 micrometer is ____ kilometer.
  • A. $$10^{-9}$$
  • B. $$10^{-8}$$
  • C. $$10^{-10}$$
  • D. $$10^{8}$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q2 Single Correct Medium
Four students measure a time interval that is known to be $$1.734$$s. The measurement recorded by each student is shown. Which measurement is the most accurate?
  • A. $$1$$ s
  • B. $$1.7$$ s
  • C. $$1.83$$ s
  • D. $$1.604$$ s

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q3 Single Correct Medium
An equation is given by $$\dfrac{d}{dt}[\int\vec{v}.\vec{dS}]$$-$$k[\vec{v}.\vec{\theta}]$$. If $$\vec{v}$$ represents velocity, $$\vec{ds}$$ is small dosplacement, $$t$$ is time and a is acceleratation. The dimension of $$k$$ is 
  • A. $$[T]$$
  • B. $$[T^{-1}]$$
  • C. $$[T^{-2}]$$
  • D. $$[L]$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q4 Single Correct Medium
The dimensions of emf in MKS is:
  • A. $${ML^{-1}}{T^{-2}}{Q^{-2}}$$
  • B. $${ML^{2}}{T^{-2}}{Q^{-2}}$$
  • C. $${MLT^{-2}}{Q^{-1}}$$
  • D. $${ML^{2}}{T^{-2}}{Q^{-1}}$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q5 Assertion & Reason Medium
ASSERTION

Force can be added to pressure.

REASON

Force and pressure have same dimensions.

  • A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  • B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  • C. Assertion is correct but Reason is incorrect
  • D. Both Assertion and Reason are incorrect

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer