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प्रश्न
Define - Astronomical unit.
उत्तर
One astronomical unit is defined as the average distance between the earth and the sun.
1 AU = 1.496 5 106km = 1.496 × 1011m.
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संबंधित प्रश्न
Light year is the unit of ______.
The materials with lower density are called ______.
If the density of a solid is higher than that of a liquid, it ______ is that liquid.
The average distance between the earth and the sun is about ______ million kilometre.
The volume of a figure is the region covered by the boundary of the figure.
One light-year is defined as the distance traveled by light in a W vacuum during the period of one year.
What is the fundamental unit of amount of substance?
Match the following:
| Column-I | Column-II | |
| 1. | 10 years | 1 year |
| 2. | 10 centuries | 1century(100 years) |
| 3. | 10 decades | 1 millennium |
| 4. | 365.24 days | 1 decade |
Assertion (A): Light year and wavelength both measure distance
Reason (R): Both have dimensions of time.
Write the units which are used to measure long distances.
