Advertisements
Advertisements
Question
Match the following.
| Column A | Column B |
| (1) Length | a. kilogram |
| (2) Mass | b. cubic metre |
| (3) Area | c. metre |
| (4) Volume | d. square metre |
Advertisements
Solution
| Column A | Column B |
| (1) Length | c. metre |
| (2) Mass | a. kilogram |
| (3) Area | d. square metre |
| (4) Volume | b. cubic metre |
APPEARS IN
RELATED QUESTIONS
The principle of ‘parallax’ in section 2.3.1 is used in the determination of distances of very distant stars. The baseline AB is the line joining the Earth’s two locations six months apart in its orbit around the Sun. That is, the baseline is about the diameter of the Earth’s orbit ≈ 3 × 1011m. However, even the nearest stars are so distant that with such a long baseline, they show parallax only of the order of 1” (second) of arc or so. A parsec is a convenient unit of length on the astronomical scale. It is the distance of an object that will show a parallax of 1” (second) of arc from opposite ends of a baseline equal to the distance from the Earth to the Sun. How much is a parsec in terms of meters?
Write true or false.
Every measurement involves two things – a number and a unit.
500 gm = ______ kilogram.
Rulers, measuring tapes and metre scales are used to measure ______
Metre is the unit of ______.
Match the following.
| 1. | Length | kelvin |
| 2. | Mass | metre |
| 3. | Time | kilogram |
| 4. | Temperature | second |
Can you find the diameter of a thin wire of length 2 m using the ruler from your instrument box?
What is the length of a 100 rupee note? Guess. Now measure it using a scale.
Difference in size 
Do this for yourself and find the difference.
To measure the distance of a planet from the earth, ______ method is used.
