Physics

Round the following number to $$2$$ significant digits.
$$84.16$$.


SOLUTION
Value $$=84$$.
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!


Subjective 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
Possible errors with screw gauge are
  • A. Systematic error
  • B. Backlash error
  • C. Personal error
  • D. All these

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q2 Subjective Medium
The current in a conductor and the potential difference across its ends are measured by an ammeter and a voltmeter. The meters draw negligible currents. The ammeter is accurate but the voltmeter has a zero error (that is, it does not read zero when no potential difference is applied). Calculate the zero error if the readings for two different conditions are $$1.75\ A, 14.4\ V$$ and $$2.75\ A, 22.4\ V.$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q3 Single Correct Medium
The time period of oscillations of a simple pendulum is 1 minute. If its length is increasing by $$44\%$$ then its new time period of oscillation will be
  • A. 96 s
  • B. 58 s
  • C. 82 s
  • D. 72 s

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q4 Single Correct Medium
Two quantities $$A$$ and $$B$$ have different dimensions. Which mathematical operation given below is physically meaningful?
  • A. $$A/B$$
  • B. $$A+B$$
  • C. $$A-B$$
  • D. $$A=B$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer
Q5 Single Correct Medium
Two slits are separated by $$0.32\ mm$$. A beam of $$500\ nm$$ lights strikes the slits producing an interference pattern. The number of maxima observed in the angular range $$-30^{o}<\theta<30^{o}$$.
  • A. $$300$$
  • B. $$150$$
  • C. $$599$$
  • D. $$739$$

Asked in: Physics - Units and Measurement


1 Verified Answer | Published on 18th 08, 2020

View Answer