Physics

# Which of the following is correct about the correct measurement of length?

Measuring your classmate's height using long wooden scale

You're just one step away

Single Correct Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 197

#### Realted Questions

Q1 Subjective Medium
Check the correctness of the equation$F=mv^2/r$ where F is a force, m is mass, v is velocity and r is a radius.

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Subjective Medium
Gold, which has a density of $19.32\ g/cm^3$, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber.
If a sample of gold, with a mass of $27.60\ g$, is pressed into a leaf of $1.000\ \mu m$ thickness, what is the area of the leaf?

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
Systematic error occurred due to poor calibration of instrument that can be corrected by
• B. replacing instruments
• C. taking mean of values
• D. taking median of values

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Medium
In an experiment to determine acceleration due to gravity by simple pendulum, a student commits 1 % positive error in the measurement of length and 3% negative error in the measurement of time period. The percentage error in the value of g will be :
• A. 7%
• B. 10%
• C. 4%
• D. 3%

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Single Correct Medium
Light years is the unit of:
• A. time
• B. length
• C. mass
• D. none of these

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020