Advertisements
Advertisements
प्रश्न
Can you find the diameter of a thin wire of length 2 m using the ruler from your instrument box?
उत्तर
Yes, first you have to wound the wire around the scale for 10 cm and count the number of turns in it. Then if you divide 10 cm by number of turns which gives the thickness of the wire.
APPEARS IN
संबंधित प्रश्न
When the planet Jupiter is at a distance of 824.7 million kilometres from the Earth, its angular diameter is measured to be 35.72″ of arc. Calculate the diameter of Jupiter
Just as precise measurements are necessary in science, it is equally important to be able to make rough estimates of quantities using rudimentary ideas and common observations. Think of ways by which you can estimate the following (where an estimate is difficult to obtain, try to get an upper bound on the quantity):-
the number of air molecules in your classroom.
What are the S.I. units of
- mass
- length
- time and
- temperature.
Write their names and symbols.
While measuring the length of an object using a ruler, the position of your eye should be
Length of one’s chest can be measured using metre scale.
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 |
Metre is the unit of ______.
Assertion (A): Distance between two celestial bodies is measured in terms of light year.
Reason (R): The distance travelled by the light in one year is one light year.
Measure the yellow rectangle. It is ________ cm long.
What are the materials needed to find the length of a banana?
