Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Parsec refers to the distance at which an arc of length equal to 1 astronomical unit subtends an angle of one second at a point.
No, a parsec is not the same as the astronomical unit (A.U.).
1 Parsec = 2 X 105 A.U.
APPEARS IN
संबंधित प्रश्न
What do you understand by the term measurement?
What do you understand by the term dependent variable?
Name three systems of unit and state various fundamental units in them.
Explain the term pitch. How are they determined?
The distance between Delhi and Chennai can be measured in ______.
5 km = ______ m.
These are the instruments used in measuring the volume of objects with irregular shapes ______.
Match the following:
| 1. | Length | 1. | ampere (A) |
| 2. | time | 2. | Kelvin (K) |
| 3. | Mass | 3. | meter (M) |
| 4. | Temperature | 4. | second (S) |
| 5. | Electric current | 5. | kilogram (K) |
If no object is placed on the hook, then the pointer of the spring balance reads ______.
Questions based on higher-order thinking skills:
|
There are three spheres A, B, and C as shown below. Spheres A and B are made of the same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of sphere A. The density of A is double that of C.
|
Now answer the following questions:
- Find the ratio of masses of spheres A and B.
- Find the ratio of the volumes of spheres A and B.
- Find the ratio of masses of spheres A and C.



