Advertisements
Advertisements
प्रश्न
Define standard meter.
Advertisements
उत्तर
A standard metreis equal to 1650763.73 wavelengths in vacuum, of the radiation from krypton isotope of mass 86.
संबंधित प्रश्न
Complete the following: 1 g =………kg
A boy makes a ruler with graduations in cm on it, (i.e. 100 divisions in 1 m). To what accuracy this ruler can measure? How can this accuracy be increased?
What do you understand by the term measurement?
State or define the following term:
Solar day
Complete the analogy.
Sugar : Beam balance :: Lime juice : ______?
What are the two parts present in a measurement?
Figure shows a measuring scale which is usually supplied with a geometry box. Which of the following distance cannot be measured with this scale by using it only once?

Match the events related to motion in Column I with the types of motions given in Column II.
| Column I | Column II | ||
| (a) | A moving wheel of a sewing machine |
(i) | Circular motion |
| (b) | Movement of tip of the minute hand of a clock in one hour |
(ii) | Rotational motion |
| (c) | A moving swing | (iii) | Periodic motion |
Define measurement.
