Q. No.Temperature can be expressed as a derived quantity in terms of any of the following:
| 1. | length and mass | 2. | mass and time |
| 3. | length, mass, and time | 4. | none of the above |
| 1. | both units and dimensions |
| 2. | units but no dimensions |
| 3. | dimensions but no units |
| 4. | no units and no dimensions |
Which of the following measurements is the most precise?
1. 5.00 mm
2. 5.00 cm
3. 5.00 m
4. 5.00 km
The mean length of an object is \(5~\text{cm}\). Which of the following measurements is the most accurate?
| 1. | \(4.9~\text{cm}\) | 2. | \(4.805~\text{cm}\) |
| 3. | \(5.25~\text{cm}\) | 4. | \(5.4~\text{cm}\) |
| 1. | Random errors |
| 2. | Instrumental errors |
| 3. | Personal errors |
| 4. | Least count errors |
1. \(3.328\) cm
2. \(3.3\) cm
3. \(3.33\) cm
4. \(3.32\) cm
The periods of oscillation of a simple pendulum in an experiment are recorded as 2.63 s, 2.56 s, 2.42 s, 2.71 s, and 2.80 s respectively. The average absolute error will be:
1. 0.1 s
2. 0.11 s
3. 0.01 s
4. 1.0 s
The length and breadth of a rectangular sheet are \(16.2\) cm and \(10.1\) cm, respectively. The area of the sheet in appropriate significant figures and error would be, respectively,
| 1. | \(164\pm3~\text{cm}^2\) | 2. | \(163.62\pm2.6~\text{cm}^2\) |
| 3. | \(163.6\pm2.6~\text{cm}^2\) | 4. | \(163.62\pm3~\text{cm}^2\) |
We measure the period of oscillation of a simple pendulum. In successive measurements, the readings turn out to be 2.63 s, 2.56 s, 2.42 s, 2.71 s, and 2.80 s. The average absolute error and percentage error, respectively, are:
1. 0.22 s and 4%
2. 0.11 s and 4%
3. 4 s and 0.11%
4. 5 s and 0.22%
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