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 \(2.63~\text s, 2.56~\text s, 2.42~\text s, 2.71~\text s,\) and \(2.80~\text s.\) The average absolute error and percentage error, respectively, are:
1. \(0.22~\text s\) and \(4\%\)
2. \(0.11~\text s\) and \(4\%\)
3. \(4~\text s\) and \(0.11\%\)
4. \(5~\text s\) and \(0.22\%\)
© 2025 GoodEd Technologies Pvt. Ltd.