A student measures certain lengths using a meter scale having least count equal to 1mm. Which one of the following measurements is more precise?

examrobotsa's picture

Submitted by examrobotsa on

Q: (NDA-II/2019)
A student measures certain lengths using a meter scale having least count equal to 1mm.
Which one of the following measurements is more precise?

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,8,21,11,5,8,5

keywords: 

{'meter scale': [0, 0, 0, 1], 'measurements': [0, 0, 0, 2], 'certain lengths': [0, 0, 0, 1], 'cm': [2, 0, 7, 20], 'mm': [0, 0, 0, 1]}

In this question, we are comparing the precision of different measurements taken using a meter scale with a least count of 1mm. The precision of a measurement refers to the degree of exactness or detail that can be achieved.

Option 1: 0.50 mm

This measurement has a precision of 0.50 mm. It is more precise than the least count of the meter scale, but less precise than the other options.

Option 2: 29.07 cm

This measurement has a precision of 0.01 cm or 0.1 mm. It is less precise than the least count of the meter scale and less precise than option 1.

Option 3: 0.925 m

This measurement has a precision of 0.001 m or 1 mm. It is more precise than the least count of the meter scale and more precise than the other options.

Option 4: 910 mm

This measurement has a precision of 1 mm. It is more precise than the least count of the meter scale and less precise than option 3.

Therefore, option 3 (0.925 m) is the most precise measurement out of the given options. The precision is determined by the number of decimal places in the measurement.

Practice this on app