Advertisements
Advertisements
प्रश्न
Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is 3.0 g. On the basis of given data, mark the correct option out of the following statements.
| Student | Readings | |
| (i) | (ii) | |
| A | 3.01 | 2.99 |
| B | 3.05 | 2.95 |
पर्याय
Results of both the students are neither accurate nor precise.
Results of student A are both precise and accurate.
Results of student B are neither precise nor accurate.
Results of student B are both precise and accurate.
उत्तर
Results of student A are both precise and accurate.
Explanation:
Average of reading of student A,
Average of student A = `(3.01 + 2.99)/2` = 3.00
Average of reading of students B,
Average of student B = `(3.05 + 2.95)/2` = 3.00
The correct reading is 3. For both A and B, the average value is close to the correct. Thus, reading of both are accurate.
The reading of student A are also very close to each other and close to the average value. Thus, reading are precise. Also, the reading of student B are also very close to each other and close to the average value.
APPEARS IN
संबंधित प्रश्न
Calculate the atomic mass (average) of chlorine using the following data :-
| % Natural Abundance | Molar Mass | |
| 35Cl | 75.77 | 34.9689 |
| 37Cl | 24.23 | 36.9659 |
Calculate the average atomic mass of hydrogen using the following data:
| Isotope | % Natural abundance | Molar mass |
| 1H | 99.985 | 1 |
| 2H | 0.015 | 2 |
In a certain region of space there are only 5 molecules per cm3 on average. The temperature is 3 K. The average pressure of this very dilute gas is ______ × 10-21 atoms.
