Advertisements
Advertisements
प्रश्न
Which line is longer? C or D? Measure each line. How good is your guess?
Advertisements
उत्तर
I think both lines C and D are of the same measurement.
With the help of a ruler, we get the measurement of 3.2 cm for both lines.
So, our guess was correct.
APPEARS IN
संबंधित प्रश्न
What are the S.I. units of
- mass
- length
- time and
- temperature.
Write their names and symbols.
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 |
Fill in the blank.
In the ............ system, length is measured in centimetres.
Answer the following question.
Star A is farther than star B. Which star will have a large parallax angle?
Match the following.
| 1. | Length of the fore arm | metre |
| 2. | SI unit of length | second |
| 3. | Nano | 103 |
| 4. | SI Unit of time | 10–9 |
| 5. | Kilo | Cubit |
Numerical Problem.
Inian and Ezhilan argue about the light year. Inian tells that it is 9.46 × 1015 m and Ezhilan argues that it is 9.46 × 10 12 km. Who is right? Justify your answer.
What is the length of a 100 rupee note? Guess. Now measure it using a scale.
How many stamps are needed to cover the rectangle?
You can play this game on the ground. Make two squares of one square meter each. Divide your class into two teams. Ready to play!
- How many of you can stand in it?
There are two beautiful lakes near a village. People come for boating and picnics in both the lakes. The village Panchayat is worried that with the noise of the boats the birds will stop coming. The Panchayat wants motorboats in only one lake. The other lake will be saved for the birds to make their nests.
- A longer boundary around the lake will help more birds to lay their eggs. So which lake should be kept for birds? Which lake should be used for boats?
There are two beautiful lakes near a village. People come for boating and picnics in both the lakes. The village Panchayat is worried that with the noise of the boats the birds will stop coming. The Panchayat wants motorboats in only one lake. The other lake will be saved for the birds to make their nests.
- Find the area of lake B on the drawing in square cm. What is its actual area in square km?
In which SI unit, you can measure your height?
The distance between one end and the other end is called ______.
What is the unit of length?
Length is ______.
SI unit of electric current is ______.
Yard was used as the unit of length.
To measure the distance of a planet from the earth, ______ method is used.
According to the modern definition, what fraction of a second does light travel to define one metre?
